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Document and Entity Information Document - USD ($)	12 Months Ended
Document and Entity Information Document - USD ($)	Dec. 31, 2016	Jan. 31, 2017	Jun. 30, 2016
Entity Information [Line Items]
Entity Registrant Name	ITRON INC /WA/
Entity Central Index Key	0000780571
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Amendment Flag	false
Trading Symbol	ITRI
Entity Common Stock, Shares Outstanding		38,327,719
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,632,121,446

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Revenues	$ 2,013,186	$ 1,883,533	$ 1,947,616
Cost of revenues	1,352,866	1,326,848	1,333,566
Gross profit	660,320	556,685	614,050
Operating expenses
Sales and marketing	158,883	161,380	182,503
Product development	168,209	162,334	175,500
General and administrative	162,815	155,715	162,466
Amortization of Intangible Assets	25,112	31,673	43,619
Restructuring	49,090	(7,263)	49,482
Total operating expenses	564,109	503,839	613,570
Operating income	96,211	52,846	480
Other income (expense)
Interest income	865	761	494
Interest expense	(10,948)	(12,289)	(11,602)
Other income (expense), net	(1,501)	(4,216)	(7,637)
Total other income (expense)	(11,584)	(15,744)	(18,745)
Income (loss) before income taxes	84,627	37,102	(18,265)
Income tax provision	(49,574)	(22,099)	(4,035)
Net income (loss)	35,053	15,003	(22,300)
Net income attributable to noncontrolling interests	3,283	2,325	1,370
Net income (loss) attributable to Itron, Inc.	$ 31,770	$ 12,678	$ (23,670)
Earnings (loss) per common share - Basic	$ 0.83	$ 0.33	$ (0.60)
Earnings (loss) per common share - Diluted	$ 0.82	$ 0.33	$ (0.60)
Weighted average common shares outstanding - Basic	38,207	38,224	39,184
Weighted average common shares outstanding - Diluted	38,643	38,506	39,184

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 35,053	$ 15,003	$ (22,300)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(24,977)	(72,929)	(89,297)
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	(275)	1,086	488
Pension benefit obligation adjustment	(3,468)	6,296	(24,947)
Total other comprehensive income (loss), net of tax	(28,720)	(65,547)	(113,756)
Total comprehensive income (loss), net of tax	6,333	(50,544)	(136,056)
Comprehensive income (loss) attributable to noncontrolling interest, net of tax:	3,283	2,325	1,370
Comprehensive income (loss) attributable to Itron, Inc.	$ 3,050	$ (52,869)	$ (137,426)

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 133,565	$ 131,018
Accounts receivable, net	351,506	330,895
Inventories	163,049	190,465
Other current assets	84,346	106,562
Total current assets	732,466	758,940
Property, plant, and equipment, net	176,458	190,256
Deferred tax assets, net	94,113	109,387
Other long-term assets	50,129	51,679
Intangible assets, net	72,151	101,932
Goodwill	452,494	468,122
Total assets	1,577,811	1,680,316
Liabilities, Current [Abstract]
Accounts payable	172,711	185,827
Other current liabilities	43,625	78,630
Wages and benefits payable	82,346	76,980
Taxes payable	10,451	14,859
Current portion of debt	14,063	11,250
Current portion of warranty	24,874	36,927
Unearned revenue	64,976	73,301
Total current liabilities	413,046	477,774
Long-term debt	290,460	358,915
Long-term warranty	18,428	17,585
Pension benefit obligation	84,498	85,971
Deferred tax liabilities, net	3,073	1,723
Other long-term obligations	117,953	115,645
Total liabilities	927,458	1,057,613
Commitments and contingencies (Note 12)
Equity
Preferred stock, no par value, 10 million shares authorized, no shares issued or outstanding	0	0
Common stock, no par value, 75 million shares authorized, 38,317 and 37,906 shares issued and outstanding	1,270,467	1,246,671
Accumulated other comprehensive loss, net	(229,327)	(200,607)
Accumulated deficit	(409,536)	(441,306)
Total Itron, Inc. shareholders' equity	631,604	604,758
Noncontrolling interests	18,749	17,945
Total equity	650,353	622,703
Total liabilities and equity	$ 1,577,811	$ 1,680,316

Consolidated Balance Sheets (Parentheticals) - $ / shares shares in Thousands	Dec. 31, 2016	Dec. 31, 2015
Common Stock, Number of Shares, Par Value and Other Disclosures
Common stock, par value
Common stock, shares authorized	75,000	75,000
Common stock, shares issued	38,317	37,906
Common stock, shares outstanding	38,317	37,906
Preferred Stock, Number of Shares, Par Value and Other Disclosures
Preferred stock, par value
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0

Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Noncontrolling Interests [Member]	Total Itron Inc. Shareholders' Equity [Member]	Common Stock [Member]	Common Stock Including Additional Paid in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings (Accumulated Deficit) [Member]
Balance (shares) at Dec. 31, 2013				39,149
Balance (value) at Dec. 31, 2013	$ 856,746	$ 17,735	$ 839,011		$ 1,290,629	$ (21,304)	$ (430,314)
Net income (loss)	(22,300)		(23,670)				(23,670)
Net income attributable to noncontrolling interests	1,370
Other comprehensive income (loss), net of tax	(113,756)	0	(113,756)			(113,756)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1,564)	(1,564)
Options exercised (shares)				65
Options exercised (value)	1,621		1,621		1,621
Restricted stock awards released (shares)				281
Restricted stock awards released (value)	0		0		0
Issuance of stock-based compensation awards (shares)				21
Issuance of stock-based compensation awards (value)	936		936		936
Employee stock purchase plan (shares)				61
Employee stock purchase plan (value)	2,247		2,247		2,247
Stock-based compensation expense	16,924		16,924		16,924
Excess tax benefits from employee stock plans	(2,647)		(2,647)		(2,647)
Repurchase of common stock (shares)				(986)
Repurchase of common stock (value)	(39,665)		(39,665)		(39,665)
Balance (shares) at Dec. 31, 2014				38,591
Balance (value) at Dec. 31, 2014	698,542	17,541	681,001		1,270,045	(135,060)	(453,984)
Net income (loss)	15,003		12,678				12,678
Net income attributable to noncontrolling interests	2,325
Other comprehensive income (loss), net of tax	(65,547)	0	(65,547)			(65,547)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1,921)	(1,921)
Options exercised (shares)				24
Options exercised (value)	853		853		853
Restricted stock awards released (shares)				296
Restricted stock awards released (value)	0		0		0
Issuance of stock-based compensation awards (shares)				20
Issuance of stock-based compensation awards (value)	706		706		706
Employee stock purchase plan (shares)				54
Employee stock purchase plan (value)	1,819		1,819		1,819
Stock-based compensation expense	13,384		13,384		13,384
Excess tax benefits from employee stock plans	(1,853)		(1,853)		(1,853)
Repurchase of common stock (shares)				(1,079)
Repurchase of common stock (value)	$ (38,283)		(38,283)		(38,283)
Balance (shares) at Dec. 31, 2015	37,906			37,906
Balance (value) at Dec. 31, 2015	$ 622,703	17,945	604,758		1,246,671	(200,607)	(441,306)
Net income (loss)	35,053		31,770				31,770
Net income attributable to noncontrolling interests	3,283
Other comprehensive income (loss), net of tax	(28,720)	0	(28,720)			(28,720)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(2,479)	(2,479)
Options exercised (shares)				58
Options exercised (value)	2,144		2,144		2,144
Restricted stock awards released (shares)				312
Restricted stock awards released (value)	0		0		0
Issuance of stock-based compensation awards (shares)				21
Issuance of stock-based compensation awards (value)	955		955		955
Employee stock purchase plan (shares)				20
Employee stock purchase plan (value)	747		747		747
Stock-based compensation expense	17,080		17,080		17,080
Excess tax benefits from employee stock plans	$ 2,870		2,870		2,870
Balance (shares) at Dec. 31, 2016	38,317			38,317
Balance (value) at Dec. 31, 2016	$ 650,353	$ 18,749	$ 631,604		$ 1,270,467	$ (229,327)	$ (409,536)

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income (loss)	$ 35,053	$ 15,003	$ (22,300)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	68,318	75,993	98,139
Stock-based compensation	18,035	14,089	17,860
Amortization of prepaid debt fees	1,076	2,128	1,612
Deferred taxes, net	13,790	1,488	(34,757)
Restructuring, non-cash	7,188	976	5,172
Other adjustments, net	4,309	2,003	914
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(27,162)	(9,009)	(15,119)
Inventories	22,343	(52,737)	7,208
Other current assets	20,705	12,512	(10,947)
Other long-term assets	(339)	(3,721)	(12,540)
Accounts payables, other current liabilities, and taxes payable	(37,312)	(7,060)	56,158
Wages and benefits payable	7,808	(10,866)	7,502
Unearned revenue	(25,810)	11,943	30,584
Warranty	(10,246)	20,161	(7,297)
Other operating, net	18,086	447	10,784
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	115,842	73,350	132,973
Investing activities
Acquisitions of property, plant, and equipment	(43,543)	(43,918)	(44,495)
Payments to Acquire Businesses, Net of Cash Acquired	(951)	(5,754)	0
Other investing, net	(3,034)	721	2,999
Net cash used in investing activities	(47,528)	(48,951)	(41,496)
Financing activities
Proceeds from borrowings	15,877	113,467	47,657
Payments on debt	(79,119)	(62,998)	(102,438)
Issuance of common stock	2,891	2,663	3,647
Repurchase of common stock	0	(38,283)	(39,665)
Other financing, net	(2,672)	(7,109)	(1,078)
Net cash provided by (used in) financing activities	(63,023)	7,740	(91,877)
Effect of foreign exchange rate changes on cash and cash equivalents	(2,744)	(13,492)	(12,034)
Increase (decrease) in cash and cash equivalents	2,547	18,647	(12,434)
Cash and cash equivalents at beginning of period	131,018	112,371	124,805
Cash and cash equivalents at end of period	133,565	131,018	112,371
Supplemental disclosure of cash flow information:
Income taxes, net	24,287	29,189	18,222
Interest	$ 9,921	$ 10,198	$ 9,912

Summary of Significant Accounting Policies (Text Block)	12 Months Ended
Summary of Significant Accounting Policies (Text Block)	Dec. 31, 2016
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	Summary of Significant Accounting Policies We were incorporated in the state of Washington in 1977. We provide a portfolio of solutions to utilities for the electricity, gas, and water markets throughout the world. Financial Statement Preparation The consolidated financial statements presented in this Annual Report include the Consolidated Statements of Operations, Comprehensive Income (Loss), Equity, and Cash Flows for the years ended December 31, 2016, 2015, and 2014 and the Consolidated Balance Sheets as of December 31, 2016 and 2015 of Itron, Inc. and its subsidiaries. Basis of Consolidation We consolidate all entities in which we have a greater than 50% ownership interest or in which we exercise control over the operations. We use the equity method of accounting for entities in which we have a 50% or less investment and exercise significant influence. Entities in which we have less than a 20% investment and where we do not exercise significant influence are accounted for under the cost method. Intercompany transactions and balances are eliminated upon consolidation. Noncontrolling Interests In several of our consolidated international subsidiaries, we have joint venture partners, who are minority shareholders. Although these entities are not wholly-owned by Itron, we consolidate them because we have a greater than 50% ownership interest or because we exercise control over the operations. The noncontrolling interest balance is adjusted each period to reflect the allocation of net income (loss) and other comprehensive income (loss) attributable to the noncontrolling interests, as shown in our Consolidated Statements of Operations and our Consolidated Statements of Comprehensive Income (Loss) as well as contributions from and distributions to the owners. The noncontrolling interest balance in our Consolidated Balance Sheets represents the proportional share of the equity of the joint venture entities, which is attributable to the minority shareholders. Cash and Cash Equivalents We consider all highly liquid instruments with remaining maturities of three months or less at the date of acquisition to be cash equivalents. Accounts Receivable,net Accounts receivable are recognized for invoices issued to customers in accordance with our contractual arrangements. Interest and late payment fees are minimal. Unbilled receivables are recognized when revenues are recognized upon product shipment or service delivery and invoicing occurs at a later date. We recognize an allowance for doubtful accounts representing our estimate of the probable losses in accounts receivable at the date of the balance sheet based on our historical experience of bad debts and our specific review of outstanding receivables. Accounts receivable are written-off against the allowance when we believe an account, or a portion thereof, is no longer collectible. Inventories Inventories are stated at the lower of cost or market using the first-in, first-out method. Cost includes raw materials and labor, plus applied direct and indirect costs. Derivative Instruments All derivative instruments, whether designated in hedging relationships or not, are recognized on the Consolidated Balance Sheets at fair value as either assets or liabilities. The components and fair values of our derivative instruments are determined using the fair value measurements of significant other observable inputs (Level 2), as defined by GAAP. The fair value of our derivative instruments may switch between an asset and a liability depending on market circumstances at the end of the period. We include the effect of our counterparty credit risk based on current published credit default swap rates when the net fair value of our derivative instruments are in a net asset position and the effect of our own nonperformance risk when the net fair value of our derivative instruments are in a net liability position. For any derivative designated as a fair value hedge, the changes in the fair value of the derivative and of the hedged item attributable to the hedged risk are recognized in earnings. For any derivative designated as a cash flow hedge, the effective portions of changes in the fair value of the derivative are recognized as a component of other comprehensive income (loss) (OCI) and are recognized in earnings when the hedged item affects earnings. Ineffective portions of cash flow hedges are recognized in other income (expense) in the Consolidated Statements of Operations. For a hedge of a net investment, the effective portion of any unrealized gain or loss from the foreign currency revaluation of the hedging instrument is reported in OCI as a net unrealized gain or loss on derivative instruments. Upon termination of a net investment hedge, the net derivative gain/loss will remain in accumulated other comprehensive income (loss) (AOCI) until such time when earnings are impacted by a sale or liquidation of the associated operations. Ineffective portions of fair value changes or the changes in fair value of derivative instruments that do not qualify for hedging activities are recognized in other income (expense) in the Consolidated Statements of Operations. We classify cash flows from our derivative programs as cash flows from operating activities in the Consolidated Statements of Cash Flows. Derivatives are not used for trading or speculative purposes. Our derivatives are with credit worthy multinational commercial banks, with whom we have master netting agreements; however, our derivative positions are not recognized on a net basis in the Consolidated Balance Sheets. There are no credit-risk-related contingent features within our derivative instruments. Refer to Note 7 and Note 14 for further disclosures of our derivative instruments and their impact on OCI. Property, Plant, and Equipment Property, plant, and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, generally 30 years for buildings and improvements and three to ten years for machinery and equipment, computers and software, and furniture. Leasehold improvements are capitalized and depreciated over the term of the applicable lease, including renewable periods if reasonably assured, or over the useful lives, whichever is shorter. Construction in process represents capital expenditures incurred for assets not yet placed in service. Costs related to internally developed software and software purchased for internal uses are capitalized and are amortized over the estimated useful lives of the assets. Repair and maintenance costs are recognized as incurred. We have no major planned maintenance activities. We review long-lived assets for impairment whenever events or circumstances indicate the carrying amount of an asset group may not be recoverable. Assets held for sale are classified within other current assets in the Consolidated Balance Sheets, are reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. Gains and losses from asset disposals and impairment losses are classified within the Consolidated Statement of Operations according to the use of the asset, except those gains and losses recognized in conjunction with our restructuring activities, which are classified within restructuring expense. Prepaid Debt Fees Prepaid debt fees for term debt represent the capitalized direct costs incurred related to the issuance of debt and are recognized as a direct deduction from the carrying amount of the corresponding debt liability. We have elected to present prepaid debt fees for revolving debt within other long-term assets in the Consolidated Balance Sheets. These costs are amortized to interest expense over the terms of the respective borrowings, including contingent maturity or call features, using the effective interest method, or straight-line method when associated with a revolving credit facility. When debt is repaid early, the related portion of unamortized prepaid debt fees is written off and included in interest expense. Business Combinations On the date of acquisition, the assets acquired, liabilities assumed, and any noncontrolling interests in the acquiree are recognized at their fair values. The acquiree's results of operations are also included as of the date of acquisition in our consolidated results. Intangible assets that arise from contractual/legal rights, or are capable of being separated, as well as in-process research and development (IPR&D), are measured and recognized at fair value, and amortized over the estimated useful life. IPR&D is not amortized until such time as the associated development projects are completed or terminated. If a development project is completed, the IPR&D is reclassified as a core technology intangible asset and amortized over its estimated useful life. If the development project is terminated, the recorded value of the associated IPR&D is immediately recognized. If practicable, assets acquired and liabilities assumed arising from contingencies are measured and recognized at fair value. If not practicable, such assets and liabilities are measured and recognized when it is probable that a gain or loss has occurred and the amount can be reasonably estimated. The residual balance of the purchase price, after fair value allocations to all identified assets and liabilities, represents goodwill. Acquisition-related costs are recognized as incurred. Restructuring costs associated with an acquisition are generally recognized in periods subsequent to the acquisition date, and changes in deferred tax asset valuation allowances and acquired income tax uncertainties, including penalties and interest, after the measurement period are recognized as a component of the provision for income taxes. Our acquisitions may include contingent consideration, which require us to recognize the fair value of the estimated liability at the time of the acquisition. Subsequent changes in the estimate of the amount to be paid under the contingent consideration arrangement are recognized in the Consolidated Statements of Operations. Goodwill and Intangible Assets Goodwill and intangible assets may result from our business acquisitions. Intangible assets may also result from the purchase of assets and intellectual property in a transaction that does not qualify as a business combination. We use estimates, including estimates of useful lives of intangible assets, the amount and timing of related future cash flows, and fair values of the related operations, in determining the value assigned to goodwill and intangible assets. Our finite-lived intangible assets are amortized over their estimated useful lives based on estimated discounted cash flows, generally three years to seven years for core-developed technology and customer contracts and relationships. Finite-lived intangible assets are tested for impairment at the asset group level when events or changes in circumstances indicate the carrying value may not be recoverable. Indefinite-lived intangible assets are tested for impairment annually, when events or changes in circumstances indicate the asset may be impaired, or at the time when their useful lives are determined to be no longer indefinite. Goodwill is assigned to our reporting units based on the expected benefit from the synergies arising from each business combination, determined by using certain financial metrics, including the forecasted discounted cash flows associated with each reporting unit. Each reporting unit corresponds with its respective operating segment. We test goodwill for impairment each year as of October 1, or more frequently should a significant impairment indicator occur. As part of the impairment test, we may elect to perform an assessment of qualitative factors. If this qualitative assessment indicates that it is more likely than not that the fair value of a reporting unit, including goodwill, is less than its carrying amount, or if we elect to bypass the qualitative assessment, we would then proceed with the two-step impairment test. The impairment test involves comparing the fair values of the reporting units to their carrying amounts. If the carrying amount of a reporting unit exceeds its fair value, a second step is required to measure the goodwill impairment loss amount. This second step determines the current fair values of all assets and liabilities of the reporting unit and then compares the implied fair value of the reporting unit's goodwill to the carrying amount of that goodwill. If the carrying amount of the reporting unit's goodwill exceeds the implied fair value of the goodwill, an impairment loss is recognized in an amount equal to the excess. Determining the fair value of a reporting unit is judgmental in nature and involves the use of significant estimates and assumptions. We forecast discounted future cash flows at the reporting unit level using risk-adjusted discount rates and estimated future revenues and operating costs, which take into consideration factors such as existing backlog, expected future orders, supplier contracts, and expectations of competitive and economic environments. We also identify similar publicly traded companies and develop a correlation, referred to as a multiple, to apply to the operating results of the reporting units. These combined fair values are then reconciled to the aggregate market value of our common stock on the date of valuation, while considering a reasonable control premium. Contingencies A loss contingency is recognized if it is probable that an asset has been impaired or a liability has been incurred and the amount of the loss can be reasonably estimated. We evaluate, among other factors, the degree of probability of an unfavorable outcome and our ability to make a reasonable estimate of the amount of the ultimate loss. Loss contingencies that we determine to be reasonably possible, but not probable, are disclosed but not recognized. Changes in these factors and related estimates could materially affect our financial position and results of operations. Legal costs to defend against contingent liabilities are recognized as incurred. Bonus and Profit Sharing We have various employee bonus and profit sharing plans, which provide award amounts for the achievement of financial and nonfinancial targets. If management determines it is probable that the targets will be achieved, and the amounts can be reasonably estimated, a compensation accrual is recognized based on the proportional achievement of the financial and nonfinancial targets. Although we monitor and accrue expenses quarterly based on our progress toward the achievement of the targets, the actual results may result in awards that are significantly greater or less than the estimates made in earlier quarters. Warranty We offer standard warranties on our hardware products and large application software products. We accrue the estimated cost of new product warranties based on historical and projected product performance trends and costs during the warranty period. Testing of new products in the development stage helps identify and correct potential warranty issues prior to manufacturing. Quality control efforts during manufacturing reduce our exposure to warranty claims. When testing or quality control efforts fail to detect a fault in one of our products, we may experience an increase in warranty claims. We track warranty claims to identify potential warranty trends. If an unusual trend is noted, an additional warranty accrual would be recognized if a failure event is probable and the cost can be reasonably estimated. When new products are introduced, our process relies on historical averages of similar products until sufficient data is available. As actual experience on new products becomes available, it is used to modify the historical averages to ensure the expected warranty costs are within a range of likely outcomes. Management regularly evaluates the sufficiency of the warranty provisions and makes adjustments when necessary. The warranty allowances may fluctuate due to changes in estimates for material, labor, and other costs we may incur to repair or replace projected product failures, and we may incur additional warranty and related expenses in the future with respect to new or established products, which could adversely affect our financial position and results of operations. The long-term warranty balance includes estimated warranty claims beyond one year. Warranty expense is classified within cost of revenues. Restructuring We recognize a liability for costs associated with an exit or disposal activity under a restructuring project in the period in which the liability is incurred. Employee termination benefits considered postemployment benefits are accrued when the obligation is probable and estimable, such as benefits stipulated by human resource policies and practices or statutory requirements. One-time termination benefits are recognized at the date the employee is notified. If the employee must provide future service greater than 60 days, such benefits are recognized ratably over the future service period. For contract termination costs, we recognize a liability upon the termination of a contract in accordance with the contract terms or the cessation of the use of the rights conveyed by the contract, whichever occurs later. Asset impairments associated with a restructuring project are determined at the asset group level. An impairment may be recognized for assets that are to be abandoned, are to be sold for less than net book value, or are held for sale in which the estimated proceeds less costs to sell are less than the net book value. We may also recognize impairment on an asset group, which is held and used, when the carrying value is not recoverable and exceeds the asset group's fair value. If an asset group is considered a business, a portion of our goodwill balance is allocated to it based on relative fair value. If the sale of an asset group under a restructuring project results in proceeds that exceed the net book value of the asset group, the resulting gain is recognized within restructuring expense in the Consolidated Statements of Operations. Defined Benefit Pension Plans We sponsor both funded and unfunded defined benefit pension plans for certain international employees. We recognize a liability for the projected benefit obligation in excess of plan assets or an asset for plan assets in excess of the projected benefit obligation. We also recognize the funded status of our defined benefit pension plans on our Consolidated Balance Sheets and recognize as a component of OCI, net of tax, the actuarial gains or losses and prior service costs or credits, if any, that arise during the period but that are not recognized as components of net periodic benefit cost. If actuarial gains and losses exceed ten percent of the greater of plan assets or plan liabilities, we amortize them over the employees' average future service period. Share Repurchase Plan From time to time, we may repurchase shares of Itron common stock under programs authorized by our Board of Directors. Share repurchases are made in the open market or in privately negotiated transactions and in accordance with applicable securities laws. Under applicable Washington State law, shares repurchased are retired and not displayed separately as treasury stock on the financial statements; the value of the repurchased shares is deducted from common stock. Revenue Recognition Revenues consist primarily of hardware sales, software license fees, software implementation, project management services, installation, consulting, and post-sale maintenance support. Revenues are recognized when (1) persuasive evidence of an arrangement exists, (2) delivery has occurred or services have been rendered, (3) the sales price is fixed or determinable, and (4) collectability is reasonably assured. Many of our revenue arrangements involve multiple deliverables, which combine two or more of the following: hardware, meter reading system software, installation, and/or project management services. Separate contracts entered into with the same customer that meet certain criteria such as those that are entered into at or near the same time are evaluated as one single arrangement for purposes of applying multiple element arrangement revenue recognition. Revenue arrangements with multiple deliverables are divided into separate units of accounting at the inception of the arrangement and as each item in the arrangement is delivered. If the delivered item(s) has value to the customer on a standalone basis and delivery/performance of the undelivered item(s) is probable. The total arrangement consideration is allocated among the separate units of accounting based on their relative fair values and the applicable revenue recognition criteria are then considered for each unit of accounting. The amount allocable to a delivered item is limited to the amount that we are entitled to collect and that is not contingent upon the delivery/performance of additional items. Revenues for each deliverable are then recognized based on the type of deliverable, such as 1) when the products are shipped, 2) services are delivered, 3) percentage-of-completion for implementation services, 4) upon receipt of customer acceptance, or 5) transfer of title and risk of loss. The majority of our revenue is recognized when products are shipped to or received by a customer or when services are provided. Hardware revenues are generally recognized at the time of shipment, receipt by the customer, or, if applicable, upon completion of customer acceptance provisions. Under contract accounting where revenue is recognized using percentage of completion, the cost to cost method is used to measure progress to completion. Revenue from certain OpenWay network software and services arrangements is recognized using the units-of-delivery method of contract accounting, as network design services and network software are essential to the functionality of the related hardware (network). This methodology results in the deferral of costs and revenues as professional services and software implementation commence prior to deployment of hardware. In the unusual instances when we are unable to reliably estimate the cost to complete a contract at its inception, we use the completed contract method of contract accounting. Revenues and costs are recognized upon substantial completion when remaining costs are insignificant and potential risks are minimal. Change orders and contract modifications entered into after inception of the original contract are analyzed to determine if change orders or modifications are extensions of an existing agreement or are accounted for as a separate arrangement for purposes of applying contract accounting. If we estimate that the completion of a contract component (unit of accounting) will result in a loss, the loss is recognized in the period in which the loss becomes evident. We reevaluate the estimated loss through the completion of the contract component and adjust the estimated loss for changes in facts and circumstances. Many of our customer arrangements contain clauses for liquidated damages, related to the timing of delivery or milestone accomplishments, which could become material in an event of failure to meet the contractual deadlines. At the inception of the arrangement and on an ongoing basis, we evaluate if the liquidated damages represent contingent revenue and, if so, we reduce the amount of consideration allocated to the delivered products and services and recognize it as a reduction in revenue in the period of default. If the arrangement is subject to contract accounting, liquidated damages resulting from anticipated events of default are estimated and are accounted for as a reduction of revenue in the period in which the liquidated damages are deemed probable of occurrence and are reasonably estimable. Our software customers often purchase a combination of software, service, and post contract customer support. For these types of arrangement, revenue recognition is dependent upon the availability of vendor specific objective evidence (VSOE) of fair value for any undelivered element. We determine VSOE by reference to the range of comparable standalone sales or stated renewals. We review these standalone sales or renewals on at least an annual basis. If VSOE is established for all undelivered elements in the contract, revenue is recognized for delivered elements when all other revenue recognition criteria are met. Arrangements in which VSOE for all undelivered elements is not established, we recognize revenue under the combined services approach where revenue for software and software related elements is deferred until all software products have been delivered, all software related services have commenced, and undelivered services do not include significant production, customization or modification. Revenue would be recognized over the longest period that services would be provided. Cloud services and software as a service (“SaaS”) arrangements where customers have access to certain of our software within a cloud-based IT environment that we manage, host and support are offered to customers on a subscription basis. Revenue for the cloud services and SaaS offerings are generally recognized ratably over the contact term commencing with the date the services is made available to customers and all other revenue recognition criteria have been satisfied. For arrangements where cloud services and SaaS is provided on a per meter basis, revenue is recognized based on actual meters read during the period. Certain of our revenue arrangements include an extended or noncustomary warranty provision that covers all or a portion of a customer's replacement or repair costs beyond the standard or customary warranty period. Whether or not the extended warranty is separately priced in the arrangement, a portion of the arrangement's total consideration is allocated to this extended warranty deliverable. This revenue is deferred and recognized over the extended warranty coverage period. Extended or noncustomary warranties do not represent a significant portion of our revenue. We allocate consideration to each deliverable in an arrangement based on its relative selling price. We determine selling price using VSOE, if it exists, otherwise we use third-party evidence (TPE). We define VSOE as a median price of recent standalone transactions that are priced within a narrow range. TPE is determined based on the prices charged by our competitors for a similar deliverable when sold separately. If neither VSOE nor TPE of selling price exists for a unit of accounting, we use estimated selling price (ESP) to determine the price at which we would transact if the product or service were regularly sold by us on a standalone basis. Our determination of ESP involves a weighting of several factors based on the specific facts and circumstances of the arrangement. The factors considered include, historical sales, the cost to produce the deliverable, the anticipated margin on that deliverable, our ongoing pricing strategy and policies, and the characteristics of the varying markets in which the deliverable is sold. We analyze the selling prices used in our allocation of arrangement consideration on an annual basis. Selling prices are analyzed on a more frequent basis if a significant change in our business necessitates a more timely analysis or if we experience significant variances in our selling prices. Unearned revenue is recognized when a customer pays for products or services, but the criteria for revenue recognition have not been met as of the balance sheet date. Unearned revenue of $114.3 million and $139.5 million at December 31, 2016 and 2015 related primarily to professional services and software associated with our smart metering contracts, extended or noncustomary warranty, and prepaid post-contract support. Deferred costs are recognized for products or services for which ownership (typically defined as title and risk of loss) has transferred to the customer, but the criteria for revenue recognition have not been met as of the balance sheet date. Deferred costs were $34.4 million and $56.6 million at December 31, 2016 and 2015 and are recognized within other assets in the Consolidated Balance Sheets. Hardware and software post-sale maintenance support fees are recognized ratably over the life of the related service contract. Shipping and handling costs and incidental expenses billed to customers are recognized as revenue, with the associated cost charged to cost of revenues. We recognize sales, use, and value added taxes billed to our customers on a net basis. Product and Software Development Costs Product and software development costs primarily include employee compensation and third party contracting fees. We do not capitalize product development costs, and we do not generally capitalize software development expenses as the costs incurred are immaterial for the relatively short period of time between technological feasibility and the completion of software development. Stock-Based Compensation We grant various stock-based compensation awards to our officers, employees and Board of Directors with service, market, and/or performance vesting conditions. We also grant phantom stock units, which are settled in cash upon vesting and accounted for as liability-based awards. We measure and recognize compensation expense for all stock-based compensation based on estimated fair values. The fair value of stock options is estimated at the date of grant using the Black-Scholes option-pricing model, which includes assumptions for the dividend yield, expected volatility, risk-free interest rate, and expected term. For unrestricted stock awards with no market conditions, the fair value is the market close price of our common stock on the date of grant. For restricted stock units with market conditions, the fair value is estimated at the date of award using a Monte Carlo simulation model, which includes assumptions for dividend yield and expected volatility for our common stock and the common stock for companies within the Russell 3000 index, as well as the risk-free interest rate and expected term of the awards. For phantom stock units, fair value is the market close price of our common stock at the end of each reporting period. We expense stock-based compensation at the date of grant for unrestricted stock awards. For awards with only a service condition, we expense stock-based compensation, adjusted for estimated forfeitures, using the straight-line method over the requisite service period for the entire award. For awards with performance and service conditions, if vesting is probable, we expense the stock-based compensation, adjusted for estimated forfeitures, on a straight-line basis over the requisite service period for each separately vesting portion of the award. For awards with a market condition, we expense the fair value over the requisite service period. Excess tax benefits are credited to common stock when the deduction reduces cash taxes payable. When we have tax deductions in excess of the compensation cost, they are classified as financing cash inflows in the Consolidated Statements of Cash Flows. Certain of our employees are eligible to participate in our Employee Stock Purchase Plan (ESPP). The discount provided for ESPP purchases is 5% from the fair market value of the stock at the end of each fiscal quarter and is not considered compensatory. Income Taxes We account for income taxes using the asset and liability method of accounting. Deferred tax assets and liabilities are recognized based upon anticipated future tax consequences, in each of the jurisdictions that we operate, attributable to: (1) the differences between the financial statement carrying amounts of existing assets and liabilities and their respective income tax bases; and (2) net operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured annually using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The calculation of our tax liabilities involves applying complex tax regulations in different tax jurisdictions to our tax positions. The effect on deferred tax assets and liabilities of a change in tax legislation and/or rates is recognized in the period that includes the enactment date. A valuation allowance is recognized to reduce the carrying amounts of deferred tax assets if it is not more likely than not that such assets will be realized. We do not recognize tax liabilities on undistributed earnings of international subsidiaries that are permanently reinvested. Foreign Exchange Our consolidated financial statements are reported in U.S. dollars. Assets and liabilities of international subsidiaries with non-U.S. dollar functional currencies are translated to U.S. dollars at the exchange rates in effect on the balance sheet date, or the last business day of the period, if applicable. Revenues and expenses for each subsidiary are translated to U.S. dollars using a weighted average rate for the relevant reporting period. Translation adjustments resulting from this process are included, net of tax, in OCI. Gains and losses that arise from exchange rate fluctuations for monetary asset and liability balances that are not denominated in an entity’s functional currency are included within other income (expense), net in the Consolidated Statements of Operations. Currency gains and losses of intercompany balances deemed to be long-term in nature or designated as a hedge of the net investment in international subsidiaries are included, net of tax, in OCI. Foreign currency losses, net of hedging, of $0.3 million, $3.0 million, and $5.1 million were included in other expenses, net, for the years ended December 31, 2016, 2015 and 2014, respectively. Fair Value Measurements For assets and liabilities measured at fair value, the GAAP fair value hierarchy prioritizes the inputs used in different valuation methodologies, assigning the highest priority to unadjusted quoted prices for identical assets and liabilities in actively traded markets (Level 1) and the lowest priority to unobservable inputs (Level 3). Level 2 inputs consist of quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in non-active markets; and model-derived valuations in which significant inputs are corroborated by observable market data either directly or indirectly through correlation or other means. Inputs may include yield curves, volatility, credit risks, and default rates. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Examples of significant estimates include revenue recognition, warranty, restructuring, income taxes, goodwill and intangible assets, defined benefit pension plans, contingencies, and stock-based compensation. Due to various factors affecting future costs and operations, actual results could differ materially from these estimates. New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers: Topic 606 (ASU 2014-09), to supersede nearly all existing revenue recognition guidance under U.S. GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, which deferred the effective date for implementation of ASU 2014-09 by one year and is now effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted but not earlier than the original effective date. In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net) (ASU 2016-08), which clarifies the implementation guidance of principal versus agent considerations. In April 2016, the FASB issued ASU 2016-10, Identifying Performance Obligations and Licensing (ASU 2016-10), which clarifies the identification of performance obligations and licensing implementation guidance. In May 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients (ASU 2016-12), to improve guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition. The effective date and transition requirements in ASU 2016-08, ASU 2016-10, and ASU 2016-12 are the same as the effective date and transition requirements of ASU 2015-14. The revenue guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the cumulative catch-up transition method). We currently anticipate adopting the standard effectively January 1, 2018 using the cumulative catch-up transition method, and therefore, will recognize the cumulative effect of initially applying the revenue standard as an adjustment to the opening balance of retained earnings in the period of initial application. We currently believe the most significant impact relates to our accounting for software license revenue, but are continuing to evaluate the effect that the updated standard will have on our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In April 2015, the FASB issued ASU 2015-03, Interest - Imputation of Interest (ASU 2015-03). ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of the corresponding debt liability. In August 2015, the FASB issued ASU 2015-15, Interest - Imputation of Interest: Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements (ASU 2015-15). ASU 2015-15 provides additional guidance on the presentation and subsequent measurement of debt issuance costs associated with line-of-credit arrangements. ASU 2015-03 and ASU 2015-15 are effective for interim and annual periods beginning after December 15, 2015, with early adoption permitted, and is to be applied on a retrospective basis. We adopted this standard on January 1, 2016, and it did not materially impact our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In April 2015, the FASB issued ASU 2015-05, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Fees Paid in a Cloud Computing Arrangement (ASU 2015-05), which provides guidance about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. ASU 2015-05 is effective for us on January 1, 2016. We adopted this standard on January 1, 2016, and it did not materially impact our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330) - Simplifying the Measurement of Inventory (ASU 2015-11). The amendments in ASU 2015-11 apply to inventory measured using first-in, first-out (FIFO) or average cost and will require entities to measure inventory at the lower of cost and net realizable value. Net realizable value is the ESP in the normal course of business, minus the cost of completion, disposal and transportation. Replacement cost and net realizable value less a normal profit margin will no longer be considered. We adopted this standard on January 1, 2017 and it did not materially impact our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires substantially all leases be recognized by lessees on their balance sheet as a right-of-use asset and corresponding lease liability, including leases currently accounted for as operating leases. The new standard also will result in enhanced quantitative and qualitative disclosures, including significant judgments made by management, to provide greater insight into the extent of revenue and expense recognized and expected to be recognized from existing leases. The standard requires modified retrospective adoption and will be effective for annual reporting periods beginning after December 15, 2018, with early adoption permitted. We are currently assessing the impact of adoption on our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (Topic 718) (ASU 2016-09), which simplifies several areas within Topic 718. These include the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The amendment in this ASU becomes effective on a modified retrospective basis for accounting in tax benefits recognized, retrospectively for accounting related to the presentation of employee taxes paid, prospectively for accounting related to recognition of excess tax benefits, and either prospectively or retrospectively for accounting related to presentation of excess employee tax benefits for annual periods, and interim periods within those annual periods, beginning after December 15, 2016. We adopted this standard effective January 1, 2017 and the most significant impact relates to the recognition of excess tax benefits which resulted in an approximately $15 million one-time adjustment to retained earnings and deferred tax assets related to cumulative excess tax benefits previously unrecognized. This amendment was adopted on a prospective basis, which does not require the restatement of prior years. In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business (ASU 2017-01), which narrows the definition of a business and provides a framework that gives entities a basis for making reasonable judgments about whether a transaction involves an asset or a business. ASU 2017-01 states that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or group of similar identifiable assets, the set is not a business. If this initial test is not met, a set cannot be considered a business unless it includes an input and a substantive process that together significantly contribute to the ability to create output. ASU 2017-01 is effective for fiscal years beginning after December 15, 2019 with early adoption permitted. We adopted this standard on January 1, 2017 and it will not materially impact our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment (ASU 2017-04), which simplifies the measurement of goodwill impairment by removing step two of the goodwill impairment test that requires the determination of the fair value of individual assets and liabilities of a reporting unit. ASU 2017-04 requires goodwill impairment to be measured as the amount by which a reporting unit’s carrying value exceeds its fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 is effective for fiscal years beginning after December 15, 2019 with early adoption permitted for interim or annual goodwill impairment tests performed after January 1, 2017. We are currently assessing the impact of adoption on our consolidated results of operations, financial position, cash flows, and related financial statement disclosures.

Earnings Per Share (Text Block)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings (Loss) Per Share

The following table sets forth the computation of basic and diluted earnings (loss) per share (EPS):



	Year Ended December 31,
	2016		2015		2014
	(in thousands, except per share data)
Net income (loss) available to common shareholders	$	31,770	$	12,678	$	(23,670	)

Weighted average common shares outstanding - Basic	38,207		38,224		39,184
Dilutive effect of stock-based awards	436		282		—
Weighted average common shares outstanding - Diluted	38,643		38,506		39,184
Earnings (loss) per common share - Basic	$	0.83	$	0.33	$	(0.60	)
Earnings (loss) per common share - Diluted	$	0.82	$	0.33	$	(0.60	)

Stock-based Awards

For stock-based awards, the dilutive effect is calculated using the treasury stock method. Under this method, the dilutive effect is computed as if the awards were exercised at the beginning of the period (or at time of issuance, if later) and assumes the related proceeds were used to repurchase common stock at the average market price during the period. Related proceeds include the amount the employee must pay upon exercise, future compensation cost associated with the stock award, and the amount of excess tax benefits, if any. As a result of our net losses for 2014, there was no dilutive effect to the weighted average common shares outstanding for that year. Approximately 0.7 million, 1.2 million, and 1.4 million stock-based awards were excluded from the calculation of diluted EPS for the years ended December 31, 2016, 2015, and 2014, respectively, because they were anti-dilutive. These stock-based awards could be dilutive in future periods.

Certain Balance Sheet Components (Text Block)

12 Months Ended

Dec. 31, 2016

Balance Sheet Related Disclosures [Abstract]

Certain Balance Sheet Components [Text Block]

Certain Balance Sheet Components



Accounts receivable, net	December 31, 2016		December 31, 2015
	(in thousands)
Trade receivables (net of allowance of $3,320 and $5,949)	$	299,870	$	298,550
Unbilled receivables	51,636		32,345
Total accounts receivable, net	$	351,506	$	330,895



Allowance for doubtful account activity	Year Ended December 31,
	2016			2015
	(in thousands)
Beginning balance	$	5,949		$	6,195
Provision for doubtful accounts, net	60			1,025
Accounts written-off	(2,422		)	(549		)
Effects of change in exchange rates	(267		)	(722		)
Ending balance	$	3,320		$	5,949



Inventories	December 31, 2016		December 31, 2015
	(in thousands)
Materials	$	103,274	$	111,191
Work in process	7,925		9,400
Finished goods	51,850		69,874
Total inventories	$	163,049	$	190,465



Property, plant, and equipment, net	December 31, 2016			December 31, 2015
	(in thousands)
Machinery and equipment	$	279,746		$	289,015
Computers and software	98,125			104,310
Buildings, furniture, and improvements	122,680			127,531
Land	17,179			19,882
Construction in progress, including purchased equipment	29,358			32,639
Total cost	547,088			573,377
Accumulated depreciation	(370,630		)	(383,121		)
Property, plant, and equipment, net	$	176,458		$	190,256



Depreciation expense	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Depreciation expense	$	43,206	$	44,320	$	54,435

Intangible Assets (Text Block)

12 Months Ended

Dec. 31, 2016

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Intangible Assets [Text Block]

Intangible Assets

The gross carrying amount and accumulated amortization of our intangible assets, other than goodwill, are as follows:



	December 31, 2016							December 31, 2015
	Gross Assets		Accumulated Amortization			Net		Gross Assets		Accumulated Amortization			Net
	(in thousands)
Core-developed technology	$	372,568	$	(354,878	)	$	17,690	$	388,981	$	(358,092	)	$	30,889
Customer contracts and relationships	224,467		(170,056		)	54,411		238,379		(168,885		)	69,494
Trademarks and trade names	61,785		(61,766		)	19		64,069		(62,571		)	1,498
Other	11,076		(11,045		)	31		11,078		(11,027		)	51
Total intangible assets	$	669,896	$	(597,745	)	$	72,151	$	702,507	$	(600,575	)	$	101,932

A summary of the intangible asset account activity is as follows:



	Year Ended December 31,
	2016			2015
	(in thousands)
Beginning balance, intangible assets, gross	$	702,507		$	748,148
Intangible assets acquired	—			4,827
Intangible assets impaired	—			(497		)
Effect of change in exchange rates	(32,611		)	(49,971		)
Ending balance, intangible assets, gross	$	669,896		$	702,507

Intangible assets impaired includes purchased software licenses to be sold to others. This amount was recognized as part of cost of revenues in the Consolidated Statement of Operations.

A summary of intangible asset amortization expense is as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Amortization expense	$	25,112	$	31,673	$	43,619

Estimated future annual amortization expense is as follows:



Year Ending December 31,	Estimated Annual Amortization
	(in thousands)
2017	$	17,914
2018	12,383
2019	9,695
2020	7,866
2021	6,845
Beyond 2021	17,448
Total intangible assets subject to amortization	$	72,151

Goodwill (Text Block)

12 Months Ended

Dec. 31, 2016

Goodwill Excluding Non Goodwill Intangibles [Abstract]

Goodwill Disclosure [Text Block]

Goodwill

The following table reflects goodwill allocated to each reporting segment at December 31, 2016 and 2015:



	Electricity			Gas			Water			Total Company
	(in thousands)
Goodwill balance at January 1, 2015
Goodwill before impairment	$	449,668		$	359,485		$	382,655		$	1,191,808
Accumulated impairment losses	(393,981		)	—			(297,007		)	(690,988		)
Goodwill, net	55,687			359,485			85,648			500,820

Goodwill acquired	—			—			4,684			4,684
Effect of change in exchange rates	(2,954		)	(28,049		)	(6,379		)	(37,382		)

Goodwill balance at December 31, 2015
Goodwill before impairment	414,910			331,436			350,314			1,096,660
Accumulated impairment losses	(362,177		)	—			(266,361		)	(628,538		)
Goodwill, net	52,733			331,436			83,953			468,122

Effect of change in exchange rates	(1,360		)	(11,523		)	(2,745		)	(15,628		)

Goodwill balance at December 31, 2016
Goodwill before impairment	400,299			319,913			334,505			1,054,717
Accumulated impairment losses	(348,926		)	—			(253,297		)	(602,223		)
Goodwill, net	$	51,373		$	319,913		$	81,208		$	452,494

During our 2016 and 2015 annual goodwill impairment test, performed as of October 1, 2016 and 2015, respectively, we performed the first step of the quantitative impairment test for Electricity, Gas, and Water and determined that the fair value of each of the reporting units exceeded their carrying values. No goodwill impairment was required to be recognized as the result of this quantitative analysis.

Refer to Note 1 for a description of our reporting units and the methods used to determine the fair values of our reporting units and to determine the amount of any goodwill impairment.

Debt (Text Block)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Debt [Text Block]

Debt

The components of our borrowings are as follows:



	December 31, 2016		December 31, 2015
	(in thousands)
Credit Facilities
USD denominated term loan	$	208,125	$	219,375
Multicurrency revolving line of credit	97,167		151,837
Total debt	305,292		371,212
Less: current portion of debt	14,063		11,250
Less: unamortized prepaid debt fees - term loan	769		1,047
Long-term debt	$	290,460	$	358,915

Credit Facilities

On June 23, 2015, we entered into an amended and restated credit agreement providing for committed credit facilities in the amount of $725 million U.S. dollars (the 2015 credit facility). The 2015 credit facility consists of a $225 million U.S. dollar term loan (the term loan) and a multicurrency revolving line of credit (the revolver) with a principal amount of up to $500 million. The revolver also contains a $250 million standby letter of credit sub-facility and a $50 million swingline sub-facility (available for immediate cash needs at a higher interest rate). Both the term loan and the revolver mature on June 23, 2020, and amounts borrowed under the revolver are classified as long-term and, during the credit facility term, may be repaid and reborrowed until the revolver's maturity, at which time the revolver will terminate, and all outstanding loans, together with all accrued and unpaid interest, must be repaid. Amounts not borrowed under the revolver are subject to a commitment fee, which is paid in arrears on the last day of each fiscal quarter, ranging from 0.18% to 0.30% per annum depending on our total leverage ratio as of the most recently ended fiscal quarter. Amounts repaid on the term loan may not be reborrowed. The 2015 credit facility permits us and certain of our foreign subsidiaries to borrow in U.S. dollars, euros, British pounds, or, with lender approval, other currencies readily convertible into U.S. dollars. All obligations under the 2015 credit facility are guaranteed by Itron, Inc. and material U.S. domestic subsidiaries and are secured by a pledge of substantially all of the assets of Itron, Inc. and material U.S. domestic subsidiaries, including a pledge of 100% of the capital stock of material U.S. domestic subsidiaries and up to 66% of the voting stock (100% of the non-voting stock) of their first-tier foreign subsidiaries. In addition, the obligations of any foreign subsidiary who is a foreign borrower, as defined by the 2015 credit facility, are guaranteed by the foreign subsidiary and by its direct and indirect foreign parents.

On June 13, 2016, we entered into an amendment to the 2015 credit facility, which reduced our $300 million standby letter of credit sub-facility to $250 million.

Scheduled principal repayments for the term loan are due quarterly in the amount of $2.8 million through June 2017, $4.2 million from September 2017 through June 2018, $5.6 million from September 2018 through March 2020, and the remainder due at maturity on June 23, 2020. The term loan may be repaid early in whole or in part, subject to certain minimum thresholds, without penalty.

Required minimum principal payments on our outstanding credit facilities are as follows:



Year Ending December 31,	Minimum Payments
	(in thousands)
2017	$	14,063
2018	19,687
2019	22,500
2020	249,042
2021	—
Total minimum payments on debt	$	305,292

Under the 2015 credit facility, we elect applicable market interest rates for both the term loan and any outstanding revolving loans. We also pay an applicable margin, which is based on our total leverage ratio (as defined in the credit agreement). The applicable rates per annum may be based on either: (1) the LIBOR rate or EURIBOR rate (floor of 0%), plus an applicable margin, or (2) the Alternate Base Rate, plus an applicable margin. The Alternate Base Rate election is equal to the greatest of three rates: (i) the prime rate, (ii) the Federal Reserve effective rate plus 1/2 of 1%, or (iii) one month LIBOR plus 1%. At December 31, 2016 and 2015,

the interest rates for both the term loan and the USD revolver was 2.02% and 2.18%, which includes the LIBOR rate plus a margin of 1.25% and 1.75%, respectively. At December 31, 2016 and 2015, the interest rates for the EUR revolver was 1.25% and 1.75%, which includes the EURIBOR floor rate plus a margin of 1.25% and 1.75%, respectively.

Total credit facility repayments were as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Term loan	$	11,250	$	13,125	$	26,250
Multicurrency revolving line of credit	67,869		49,873		76,188
Total credit facility repayments	$	79,119	$	62,998	$	102,438

At December 31, 2016, $97.2 million was outstanding under the 2015 credit facility revolver, and $46.1 million was utilized by outstanding standby letters of credit, resulting in $356.7 million available for additional borrowings or standby letters of credit. At December 31, 2016, $203.9 million was available for additional standby letters of credit under the letter of credit sub-facility and no amounts were outstanding under the swingline sub-facility.

Derivative Financial Instruments (Text Block)

12 Months Ended

Dec. 31, 2016

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Derivative Financial Instruments [Text Block]

Derivative Financial Instruments

As part of our risk management strategy, we use derivative instruments to hedge certain foreign currency and interest rate exposures. Refer to Note 1, Note 14, and Note 15 for additional disclosures on our derivative instruments.

The fair values of our derivative instruments are determined using the income approach and significant other observable inputs (also known as “Level 2”). We have used observable market inputs based on the type of derivative and the nature of the underlying instrument. The key inputs include interest rate yield curves (swap rates and futures) and foreign exchange spot and forward rates, all of which are available in an active market. We have utilized the mid-market pricing convention for these inputs. We include, as a discount to the derivative asset, the effect of our counterparty credit risk based on current published credit default swap rates when the net fair value of our derivative instruments is in a net asset position. We consider our own nonperformance risk when the net fair value of our derivative instruments is in a net liability position by discounting our derivative liabilities to reflect the potential credit risk to our counterparty through applying a current market indicative credit spread to all cash flows.

The fair values of our derivative instruments are as follows:



		Fair Value
	Balance Sheet Location	December 31, 2016		December 31, 2015
		(in thousands)
Asset Derivatives
Derivatives designated as hedging instruments under ASC 815-20
Interest rate cap contracts	Other current assets	$	3	$	—
Interest rate swap contracts	Other long-term assets	1,830		1,632
Interest rate cap contracts	Other long-term assets	376		1,423
Derivatives not designated as hedging instruments under ASC 815-20
Foreign exchange forward contracts	Other current assets	169		27
Interest rate cap contracts	Other current assets	4		—
Interest rate cap contracts	Other long-term assets	563		—
Total asset derivatives		$	2,945	$	3,082

Liability Derivatives
Derivatives designated as hedging instruments under ASC 815-20
Interest rate swap contracts	Other current liabilities	$	934	$	868
Derivatives not designated as hedging instruments under ASC 815-20
Foreign exchange forward contracts	Other current liabilities	449		99
Total liability derivatives		$	1,383	$	967

OCI during the reporting period for our derivative and nonderivative instruments designated as hedging instruments, net of tax, was as follows:



	2016			2015			2014
	(in thousands)
Net unrealized gain (loss) on hedging instruments at January 1,	$	(14,062	)	$	(15,148	)	$	(15,636	)
Unrealized gain (loss) on derivative instruments	(1,087		)	76			(566		)
Realized (gains) losses reclassified into net income (loss)	812			1,010			1,054
Net unrealized gain (loss) on hedging instruments at December 31,	$	(14,337	)	$	(14,062	)	$	(15,148	)

Reclassification of amounts related to hedging instruments are included in interest expense in the Consolidated Statements of Operations for the years ended December 31, 2016, 2015, and 2014. Included in the net unrealized loss on hedging instruments at December 31, 2016 and 2015 is a loss of $14.4 million, net of tax, related to our nonderivative net investment hedge, which terminated in 2011. This loss on our net investment hedge will remain in AOCI until such time when earnings are impacted by a sale or liquidation of the associated foreign operation.

A summary of the potential effect of netting arrangements on our financial position related to the offsetting of our recognized derivative assets and liabilities under master netting arrangements or similar agreements is as follows:



Offsetting of Derivative Assets
			Gross Amounts Not Offset in the Consolidated Balance Sheets
	Gross Amounts of Recognized Assets Presented in the Consolidated Balance Sheets		Derivative Financial Instruments			Cash Collateral Received		Net Amount
	(in thousands)
December 31, 2016	$	2,945	$	(1,322	)	$	—	$	1,623

December 31, 2015	$	3,082	$	(565	)	$	—	$	2,517



Offsetting of Derivative Liabilities
			Gross Amounts Not Offset in the Consolidated Balance Sheets
	Gross Amounts of Recognized Liabilities Presented in the Consolidated Balance Sheets		Derivative Financial Instruments			Cash Collateral Pledged		Net Amount
	(in thousands)
December 31, 2016	$	1,383	$	(1,322	)	$	—	$	61

December 31, 2015	$	967	$	(565	)	$	—	$	402

Our derivative assets and liabilities subject to netting arrangements consist of foreign exchange forward and interest rate contracts with three counterparties at December 31, 2016 and nine counterparties at December 31, 2015. No derivative asset or liability balance with any of our counterparties was individually significant at December 31, 2016 or 2015. Our derivative contracts with each of these counterparties exist under agreements that provide for the net settlement of all contracts through a single payment in a single currency in the event of default. We have no pledges of cash collateral against our obligations nor have we received pledges of cash collateral from our counterparties under the associated derivative contracts.

Cash Flow Hedges

As a result of our floating rate debt, we are exposed to variability in our cash flows from changes in the applicable interest rate index. We enter into swaps to achieve a fixed rate of interest on the hedged portion of debt in order to decrease this variability in our cash flows. The objective of these swaps is to reduce the variability of cash flows from increases in the LIBOR-based borrowing rates on our floating rate credit facility. The swaps do not protect us from changes to the applicable margin under our credit facility.

In May 2012, we entered into six interest rate swaps, which were effective July 31, 2013 and expired on August 8, 2016, to convert $200 million of our LIBOR based debt from a floating LIBOR interest rate to a fixed interest rate of 1.00% (excluding the applicable margin on the debt). The cash flow hedges were expected to be highly effective in achieving offsetting cash flows attributable to the hedged risk through the term of the hedge. Consequently, effective changes in the fair value of the interest rate swaps were recognized as a component of OCI and recognized in earnings when the hedged item affected earnings. The amounts paid on the hedges were recognized as adjustments to interest expense.

In October 2015, we entered into an interest rate swap, which is effective from August 31, 2016 to June 23, 2020, and converts $214 million of our LIBOR based debt from a floating LIBOR interest rate to a fixed interest rate of 1.42% (excluding the applicable margin on the debt). The notional balance will amortize to maturity at the same rate as required minimum payments on our term loan. The cash flow hedge is expected to be highly effective in achieving offsetting cash flows attributable to the hedged risk through the term of the hedge. Consequently, effective changes in the fair value of the interest rate swap is recognized as a component of OCI and will be recognized in earnings when the hedged item affects earnings. The amounts paid or received on the hedge are recognized as an adjustment to interest expense. The amount of net losses expected to be reclassified into earnings in the next 12 months is $0.9 million. At December 31, 2016, our LIBOR-based debt balance was $248.1 million.

In November 2015, we entered into three interest rate cap contracts with a total notional amount of $100 million at a cost of $1.7 million. The interest rate cap contracts expire on June 23, 2020 and were entered into in order to limit our interest rate exposure on $100 million of our variable LIBOR based debt up to 2.00%. In the event LIBOR is higher than 2.00%, we will pay interest at the capped rate of 2.00% with respect to the $100 million notional amount of such agreements. The interest rate cap contracts do not include the effect of the applicable margin. As of December 31, 2016, due to the accelerated revolver payments from surplus cash, we have elected to de-designate two of the interest rate cap contracts as cash flow hedges and discontinue the use of cash flow hedge accounting. The amounts recognized in AOCI from de-designated interest rate cap contracts will continue to be reported in AOCI unless it is not probable that the forecasted transactions will occur. As a result of the discontinuance of cash flow hedge accounting, all subsequent changes in fair value of the de-designated derivative instruments are recognized within interest expense instead of OCI. The amount of net losses expected to be reclassified into earnings for all interest rate cap contracts in the next 12 months is $0.2 million.

The before-tax effects of our cash flow derivative hedging instruments on the Consolidated Balance Sheets and the Consolidated Statements of Operations for the years ended December 31 are as follows:



Derivatives in ASC 815 Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)									Loss Reclassified from AOCI into Income (Effective Portion)										Loss Recognized in Income on Derivative (Ineffective Portion)
Derivatives in ASC 815 Cash Flow Hedging Relationships										Location	Amount									Location	Amount
	2016			2015			2014				2016			2015			2014				2016			2015		2014
	(in thousands)										(in thousands)										(in thousands)
Interest rate swap contracts	$	(1,163	)	$	367		$	(915	)	Interest expense	$	(1,296	)	$	(1,639	)	$	(1,704	)	Interest expense	$	—		$	—	$	—
Interest rate cap contracts	$	(605	)	$	(244	)	$	—		Interest expense	$	(27	)	$	—		$	—		Interest expense	$	(1	)	$	—	$	—

Derivatives Not Designated as Hedging Relationships

We are also exposed to foreign exchange risk when we enter into non-functional currency transactions, both intercompany and third-party. At each period-end, non-functional currency monetary assets and liabilities are revalued with the change recognized to other income and expense. We enter into monthly foreign exchange forward contracts, which are not designated for hedge accounting, with the intent to reduce earnings volatility associated with currency exposures. As of December 31, 2016, a total of 49 contracts were offsetting our exposures from the euro, Canadian dollar, Indonesian Rupiah, South African rand, Indian Rupee, Chinese Yuan, and various other currencies, with notional amounts ranging from $120,000 to $42.3 million.

The before-tax effects of our derivatives not designated as hedging instruments on the Consolidated Statements of Operations for the years ended December 31 are as follows:



Derivatives Not Designated as Hedging Instrument under ASC 815	Location	Gain (Loss) Recognized in Income on Derivative
		2016		2015			2014
		(in thousands)
Foreign exchange forward contracts	Other income (expense), net	$	537	$	(3,145	)	$	(5,248	)
Interest rate cap contracts	Interest expense	$	129	$	—		$	—

We will continue to monitor and assess our interest rate and foreign exchange risk and may institute additional derivative instruments to manage such risk in the future.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

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+ Details

Defined Benefit Pension Plans (Text Block)

12 Months Ended

Dec. 31, 2016

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Defined Benefit Pension Plans [Text Block]

Defined Benefit Pension Plans

We sponsor both funded and unfunded defined benefit pension plans offering death and disability, retirement, and special termination benefits for our international employees, primarily in Germany, France, Italy, Indonesia, Brazil, and Spain. The defined benefit obligation is calculated annually by using the projected unit credit method. The measurement date for the pension plans was December 31, 2016.

Our general funding policy for these qualified pension plans is to contribute amounts sufficient to satisfy regulatory funding standards of the respective countries for each plan. Our contributions for both funded and unfunded plans are paid from cash flows from our operations. The timing of when contributions are made can vary by plan and from year to year.

The following tables set forth the components of the changes in benefit obligations and fair value of plan assets:



	Year Ended December 31,
	2016			2015
	(in thousands)
Change in benefit obligation:
Benefit obligation at January 1,	$	98,767		$	116,178
Service cost	3,472			4,572
Interest cost	2,573			2,380
Actuarial (gain) loss	7,733			(5,211		)
Benefits paid	(9,481		)	(4,382		)
Foreign currency exchange rate changes	(4,386		)	(12,190		)
Curtailment	14			(1,683		)
Settlement	(1,431		)	—
Other	—			(897		)
Benefit obligation at December 31,	$	97,261		$	98,767

Change in plan assets:
Fair value of plan assets at January 1,	$	9,662		$	10,761
Actual return on plan assets	604			159
Company contributions	348			671
Benefits paid	(370		)	(308		)
Foreign currency exchange rate changes	(29		)	(1,621		)
Fair value of plan assets at December 31,	10,215			9,662
Net pension benefit obligation at fair value	$	87,046		$	89,105

Amounts recognized on the Consolidated Balance Sheets consist of:



	At December 31,
	2016		2015
	(in thousands)
Assets
Plan assets in other long-term assets	$	654	$	359

Liabilities
Current portion of pension benefit obligation in wages and benefits payable	3,202		3,493
Long-term portion of pension benefit obligation	84,498		85,971

Pension benefit obligation, net	$	87,046	$	89,105

Amounts in AOCI (pre-tax) that have not yet been recognized as components of net periodic benefit costs consist of:



	At December 31,
	2016		2015
	(in thousands)
Net actuarial loss	$	26,767	$	24,687
Net prior service cost	619		706
Amount included in AOCI	$	27,386	$	25,393

Amounts recognized in OCI (pre-tax) are as follows:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Net actuarial (gain) loss	$	6,316		$	(6,894	)	$	25,838
Settlement/curtailment loss	(1,343		)	(336		)	(55		)
Plan asset (gain) loss	(64		)	343			129
Amortization of net actuarial loss	(1,351		)	(1,979		)	(572		)
Amortization of prior service cost	(58		)	(59		)	(138		)
Other	4			(46		)	68
Other comprehensive (income) loss	$	3,504		$	(8,971	)	$	25,270

If actuarial gains and losses exceed ten percent of the greater of plan assets or plan liabilities, we amortize them over the employees' average future service period. The estimated net actuarial loss and prior service cost that will be amortized from AOCI into net periodic benefit cost during 2017 is $1.6 million.

Net periodic pension benefit costs for our plans include the following components:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Service cost	$	3,472		$	4,572		$	3,559
Interest cost	2,573			2,380			3,476
Expected return on plan assets	(540		)	(502		)	(619		)
Amortization of prior service costs	58			59			138
Amortization of actuarial net loss	1,351			1,979			572
Settlements and other	1,340			420			55
Net periodic pension benefit costs	$	8,254		$	8,908		$	7,181

The significant actuarial weighted average assumptions used in determining the benefit obligations and net periodic benefit cost for our benefit plans are as follows:



	At and For The Year Ended December 31,
	2016		2015		2014
Actuarial assumptions used to determine benefit obligations at end of period:
Discount rate	2.18	%	2.59	%	2.36	%
Expected annual rate of compensation increase	3.65	%	3.60	%	3.37	%
Actuarial assumptions used to determine net periodic benefit cost for the period:
Discount rate	2.59	%	2.36	%	3.76	%
Expected rate of return on plan assets	5.29	%	5.45	%	5.40	%
Expected annual rate of compensation increase	3.60	%	3.37	%	3.33	%

We determine a discount rate for our plans based on the estimated duration of each plan’s liabilities. For our euro denominated defined benefit pension plans, which represent 94% of our benefit obligation, we use two discount rates, with consideration of the duration of the plans, using a hypothetical yield curve developed from euro-denominated AA-rated corporate bond issues, partially weighted for market value, with minimum amounts outstanding of €500 million for bonds with less than 10 years to maturity and €50 million for bonds with 10 or more years to maturity, and excluding the highest and lowest yielding 10% of bonds within each maturity group. The discount rates used, depending on the duration of the plans, were 0.75% and 1.75%. The weighted average discount rate used to measure our benefit obligations, increased by 41 basis points from December 31, 2015 to December 31, 2016, driving a $7.7 million actuarial gain during 2016, which is recognized in OCI.

Our expected rate of return on plan assets is derived from a study of actual historic returns achieved and anticipated future long-term performance of plan assets, specific to plan investment asset category. While the study primarily gives consideration to recent insurers’ performance and historical returns, the assumption represents a long-term prospective return.

The total accumulated benefit obligation for our defined benefit pension plans was $87.2 million and $89.0 million at December 31, 2016 and 2015, respectively.

The total obligations and fair value of plan assets for plans with projected benefit obligations and accumulated benefit obligations exceeding the fair value of plan assets are as follows:



	At December 31,
	2016		2015
	(in thousands)
Projected benefit obligation	$	94,110	$	95,814
Accumulated benefit obligation	84,448		86,534
Fair value of plan assets	6,410		6,502

Our asset investment strategy focuses on maintaining a portfolio using primarily insurance funds, which are accounted for as investments and measured at fair value, in order to achieve our long-term investment objectives on a risk adjusted basis. Our general funding policy for these qualified pension plans is to contribute amounts sufficient to satisfy regulatory funding standards of the respective countries for each plan.

The fair values of our plan investments by asset category are as follows:



	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Unobservable Inputs (Level 3)
	(in thousands)
	December 31, 2016
Cash	$	783	$	783	$	—
Insurance funds	7,011		—		7,011
Other securities	2,421		—		2,421
Total fair value of plan assets	$	10,215	$	783	$	9,432

	December 31, 2015
Cash	$	795	$	795	$	—
Insurance funds	7,089		—		7,089
Other securities	1,778		—		1,778
Total fair value of plan assets	$	9,662	$	795	$	8,867

The following tables present a reconciliation of Level 3 assets held during the years ended December 31, 2016 and 2015.



	Balance at January 1, 2016		Net Realized and Unrealized Gains		Net Purchases, Issuances, Settlements, and Other			Net Transfers Into Level 3		Effect of Foreign Currency			Balance at December 31, 2016
	(in thousands)
Insurance funds	$	7,089	$	235	$	54		$	—	$	(367	)	$	7,011
Other securities	1,778		405		(84		)	—		322			2,421
Total	$	8,867	$	640	$	(30	)	$	—	$	(45	)	$	9,432



	Balance at January 1, 2015		Net Realized and Unrealized Gains		Net Purchases, Issuances, Settlements, and Other			Net Transfers Into Level 3		Effect of Foreign Currency			Balance at December 31, 2015
	(in thousands)
Insurance funds	$	7,440	$	49	$	372		$	—	$	(772	)	$	7,089
Other securities	2,595		44		(82		)	—		(779		)	1,778
Total	$	10,035	$	93	$	290		$	—	$	(1,551	)	$	8,867

As the plan assets and contributions are not significant to our total company assets, no further breakdown is provided.

Annual benefit payments for the next 10 years, including amounts to be paid from our assets for unfunded plans, and reflecting expected future service, as appropriate, are expected to be paid as follows:



Year Ending December 31,	Estimated Annual Benefit Payments
Year Ending December 31,	Estimated Annual Benefit Payments
	(in thousands)
2017	$	3,655
2018	2,662
2019	2,737
2020	3,285
2021	3,918
2022-2026	22,929

Stock-Based Compensation (Text Block)

12 Months Ended

Dec. 31, 2016

Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]

Stock-Based Compensation [Text Block]

Stock-Based Compensation

We recognize stock-based compensation expense for awards of stock options, and the issuance of restricted stock units and unrestricted stock awards. We expense stock-based compensation primarily using the straight-line method over the requisite service period. For the years ended December 31, stock-based compensation expense and the related tax benefit were as follows:



	2016		2015		2014
	(in thousands)
Stock options	$	2,357	$	2,648	$	2,333
Restricted stock units	14,723		10,735		14,591
Unrestricted stock awards	955		706		936
Phantom stock units	1,077		—		—
Total stock-based compensation	$	19,112	$	14,089	$	17,860

Related tax benefit	$	4,927	$	4,228	$	4,994

We issue new shares of common stock upon the exercise of stock options or when vesting conditions on restricted stock units are fully satisfied.

Subject to stock splits, dividends, and other similar events, 7,473,956 shares of common stock are reserved and authorized for issuance under our 2010 Stock Incentive Plan (Stock Incentive Plan). Awards consist of stock options, restricted stock units, and unrestricted stock awards. At December 31, 2016, 2,092,602 shares were available for grant under the Stock Incentive Plan. The Stock Incentive Plan shares are subject to a fungible share provision such that, with respect to grants made after December 31, 2009, the authorized share reserve is reduced by (i) one share for every one share subject to a stock option or share appreciation right granted under the Plan and (ii) 1.7 shares for every one share of common stock that was subject to an award other than an option or stock appreciation right.

Stock Options

Options to purchase our common stock are granted to certain employees, senior management, and members of our Board of Directors with an exercise price equal to the market close price of the stock on the date the Board of Directors approves the grant. Options generally become exercisable in three equal annual installments beginning one year from the date of grant and generally expire 10 years from the date of grant. Compensation expense is recognized only for those options expected to vest, with forfeitures estimated based on our historical experience and future expectations.

The fair values of stock options granted were estimated at the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions:



	Year Ended December 31,
	2016		2015		2014
Dividend yield	—		—		—
Expected volatility	33.5	%	34.3	%	39.3	%
Risk-free interest rate	1.3	%	1.7	%	1.7	%
Expected term (years)	5.5		5.5		5.5

Expected volatility is based on a combination of the historical volatility of our common stock and the implied volatility of our traded options for the related expected term. We believe this combined approach is reflective of current and historical market conditions and is an appropriate indicator of expected volatility. The risk-free interest rate is the rate available as of the award date on zero-coupon U.S. government issues with a term equal to the expected life of the award. The expected life is the weighted average expected life of an award based on the period of time between the date the award is granted and the estimated date the award will be fully exercised. Factors considered in estimating the expected life include historical experience of similar awards, contractual terms, vesting schedules, and expectations of future employee behavior. We have not paid dividends in the past and do not plan to pay dividends in the foreseeable future.

A summary of our stock option activity for the years ended December 31 is as follows:



	Shares		Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value⁽¹⁾		Weighted Average Grant Date Fair Value
	(in thousands)				(years)	(in thousands)
Outstanding, January 1, 2014	1,180		$	54.79	4.6	$	1,300
Granted	160		35.65					$	13.65
Exercised	(67	)	28.03			826
Forfeited	(7	)	44.06
Expired	(143	)	68.97
Outstanding, December 31, 2014	1,123		$	51.90	4.4	$	1,676

Granted	291		$	35.25				$	12.09
Exercised	(24	)	36.05			$	26
Forfeited	(17	)	37.47
Expired	(193	)	52.17
Outstanding, December 31, 2015	1,180		$	48.31	5.7	$	405

Granted	191		$	40.40				$	13.27
Exercised	(58	)	37.00			$	742
Forfeited	(36	)	35.29
Expired	(318	)	55.13
Outstanding, December 31, 2016	959		$	45.64	6.6	$	19,125

Exercisable, December 31, 2016	562		$	51.18	5.1	$	9,181

Expected to vest, December 31, 2016	385		$	37.76	8.7	$	9,658

⁽¹⁾

The aggregate intrinsic value of outstanding stock options represents amounts that would have been received by the optionees had all in- the-money options been exercised on that date. Specifically, it is the amount by which the market value of Itron’s stock exceeded the exercise price of the outstanding in-the-money options before applicable income taxes, based on our closing stock price on the last business day of the period. The aggregate intrinsic value of stock options exercised during the period is calculated based on our stock price at the date of exercise.

As of December 31, 2016, total unrecognized stock-based compensation expense related to nonvested stock options was $3.2 million, which is expected to be recognized over a weighted average period of approximately 1.9 years.

Restricted Stock Units

Certain employees, senior management, and members of our Board of Directors receive restricted stock units as a component of their total compensation. The fair value of a restricted stock unit is the market close price of our common stock on the date of grant. Restricted stock units generally vest over a three year period. Compensation expense, net of forfeitures, is recognized over the vesting period.

Subsequent to vesting, the restricted stock units are converted into shares of our common stock on a one-for-one basis and issued to employees. We are entitled to an income tax deduction in an amount equal to the taxable income reported by the employees upon vesting of the restricted stock units.

In 2013, the performance-based restricted stock units that were awarded under the Performance Award Agreement were determined based on (1) our achievement of specified non-GAAP EPS targets, as established at the beginning of each year for each of the calendar years contained in the performance periods (2-year and 3-year awards) (the performance condition) and (2) our total shareholder return (TSR) relative to the TSR attained by companies that are included in the Russell 3000 Index during the performance periods (the market condition). Compensation expense, net of forfeitures, was recognized on a straight-line basis, and the units vest upon achievement of the performance condition, provided participants are employed by Itron at the end of the respective performance periods. For U.S. participants who retire during the performance period, a pro-rated number of restricted stock units (based on the number of days of employment during the performance period) immediately vest based on the attainment of the performance goals as assessed after the end of the performance period.

Depending on the level of achievement of the performance condition, the actual number of shares to be earned ranges between 0% and 160% of the awards originally granted. At the end of the 2-year and 3-year performance periods, if the performance conditions are achieved at or above threshold, the number of shares earned is further adjusted by a TSR multiplier payout percentage, which ranges between 75% and 125%, based on the market condition. Therefore, based on the attainment of the performance and market conditions, the actual number of shares that vest may range from 0% to 200% of the awards originally granted. For the 2-year awards granted under the 2013 performance award, 14,433 restricted stock units became eligible for distribution at December 31, 2014. For the 3-year awards granted under the 2013 performance award, 15,648 restricted stock units became eligible for distribution at December 31, 2015.

For years subsequent to 2013, the performance-based restricted stock units to be issued are determined based on the same performance and market conditions as the 2013 awards, but the performance period is 3-years. For the 3-year awards granted under the 2014 performance award, 110,259 restricted stock units became eligible for distribution at December 31, 2016. No awards became eligible for distribution under the 2015 and 2016 awards since the performance periods had not concluded as of December 31, 2016.

Due to the presence of the TSR multiplier market condition, we utilize a Monte Carlo valuation model to determine the fair value of the awards at the grant date. This pricing model uses multiple simulations to evaluate the probability of our achievement of various stock price levels to determine our expected TSR performance ranking. The weighted-average assumptions used to estimate the fair value of performance-based restricted stock units granted and the resulting weighted average fair-value are as follows:



	Year Ended December 31,
	2016			2015			2014
Dividend yield	—			—			—
Expected volatility	30.0		%	30.1		%	32.3		%
Risk-free interest rate	0.7		%	0.7		%	0.4		%
Expected term (years)	1.8			2.1			2.0

Weighted-average grant date fair value	$	44.92		$	33.48		$	35.15

Expected volatility is based on the historical volatility of our common stock for the related expected term. We believe this approach is reflective of current and historical market conditions and is an appropriate indicator of expected volatility. The risk-free interest rate is the rate available as of the award date on zero-coupon U.S. government issues with a term equal to the expected term of the award. The expected term is the term of an award based on the period of time between the date of the award and the date the award is expected to vest. The expected term assumption is based upon the plan's performance period as of the date of the award. We have not paid dividends in the past and do not plan to pay dividends in the foreseeable future.

The following table summarizes restricted stock unit activity for the years ended December 31:



	Number of Restricted Stock Units		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value⁽¹⁾
	(in thousands)				(in thousands)
Outstanding, January 1, 2014	658
Granted⁽²⁾	350		$	35.74
Released	(291	)			$	14,402
Forfeited	(35	)
Outstanding, December 31, 2014	682

Granted⁽³⁾	434		$	35.09
Released	(296	)			$	12,204
Forfeited	(64	)
Outstanding, December 31, 2015	756

Granted⁽⁴⁾	306		$	41.58
Released	(312	)			$	11,944
Forfeited	(82	)
Outstanding, December 31, 2016	668

Vested but not released, December 31, 2016	115				$	7,242

Expected to vest, December 31, 2016	477				$	30,006


⁽¹⁾	The aggregate intrinsic value is the market value of the stock, before applicable income taxes, based on the closing price on the stock release dates or at the end of the period for restricted stock units expected to vest.


⁽²⁾	Restricted stock units include 14,433 shares for the 2-year award under the 2013 Performance Award Agreement, which are eligible for distribution at December 31, 2014.


⁽³⁾	Restricted stock units include 15,648 shares for the 3-year award under the 2013 Performance Award Agreement, which are eligible for distribution at December 31, 2015.


⁽⁴⁾	Restricted stock units include 110,259 shares for the 3-year award under the 2014 Performance Award Agreement, which are eligible for distribution at December 31, 2016.

At December 31, 2016, unrecognized compensation expense on restricted stock units was $21.6 million, which is expected to be recognized over a weighted average period of approximately 1.8 years.

Unrestricted Stock Awards

We grant unrestricted stock awards to members of our Board of Directors as part of their compensation. Awards are fully vested and recognized when granted. The fair value of unrestricted stock awards is the market close price of our common stock on the date of grant.

The following table summarizes unrestricted stock award activity for the years ended December 31:



	2016		2015		2014
	(in thousands, except per share data)
Shares of unrestricted stock granted	21		20		24

Weighted average grant date fair value per share	$	44.94	$	35.01	$	39.06

Phantom Stock Units

Phantom stock units are a form of share-based award that are indexed to our stock price and are settled in cash upon vesting. Since phantom stock units are settled in cash, compensation expense recognized over the vesting period will vary based on changes in fair value. Fair value is remeasured at the end of each reporting period based on the market close price of our common stock.

The following table summarizes phantom stock unit activity:



	Number of Phantom Stock Units		Weighted Average Grant Date Fair Value
	(in thousands)
Outstanding, January 1, 2016	—
Granted	63		$	40.11
Forfeited	(1	)
Outstanding, December 31, 2016	62

Expected to vest, December 31, 2016	57

At December 31, 2016, total unrecognized compensation expense on phantom stock units was $2.8 million, which is expected to be recognized over a weighted average period of approximately 2.2 years. We have recognized a phantom stock liability of $1.0 million within wages and benefits payable in the Consolidated Balance Sheets as of December 31, 2016.

Employee Stock Purchase Plan

Under the terms of the ESPP, employees can deduct up to 10% of their regular cash compensation to purchase our common stock at a discount from the fair market value of the stock at the end of each fiscal quarter, subject to other limitations under the plan. The sale of the stock to the employees occurs at the beginning of the subsequent quarter.

The following table summarizes ESPP activity for the years ended December 31:



	2016	2015	2014
	(in thousands)
Shares of stock sold to employees⁽¹⁾	20	54	61


⁽¹⁾	Stock sold to employees during each fiscal quarter under the ESPP is associated with the offering period ending on the last day of the previous fiscal quarter.

There were approximately 371,000 shares of common stock available for future issuance under the ESPP at December 31, 2016.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Defined Contribution Bonus and Profit Sharing Plans (Text Block)

12 Months Ended

Dec. 31, 2016

Defined Contribution, Bonus, and Profit Sharing [Abstract]

Compensation and Employee Benefit Plans [Text Block]

Defined Contribution, Bonus, and Profit Sharing Plans

Defined Contribution Plans

In the United States, United Kingdom, and certain other countries, we make contributions to defined contribution plans. For our U.S. employee savings plan, which represents a majority of our contribution expense, we provide a 50% match on the first 6% of the employee salary deferral, subject to statutory limitations. For our international defined contribution plans, we provide various levels of contributions, based on salary, subject to stipulated or statutory limitations. The expense for our defined contribution plans was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Defined contribution plans expense	$	7,941	$	6,579	$	7,097

Bonus and Profit Sharing Plans and Awards

We have employee bonus and profit sharing plans in which many of our employees participate, as well as an award program, which allows for recognition of individual employees' achievements. The bonus and profit sharing plans provide award amounts for the achievement of performance and financial targets. As the bonuses are being earned during the year, we estimate a compensation accrual each quarter based on the progress towards achieving the goals, the estimated financial forecast for the year, and the probability of achieving results. Bonus and profit sharing plans and award expense was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Bonus and profit sharing plans and award expense	$	43,377	$	14,192	$	34,989

Income Taxes (Text Block)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Taxes [Text Block]

Income Taxes

The following table summarizes the provision (benefit) for U.S. federal, state, and foreign taxes on income from continuing operations:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Current:
Federal	$	20,490		$	5,033		$	17,749
State and local	2,708			1,633			775
Foreign	12,586			13,945			20,269
Total current	35,784			20,611			38,793

Deferred:
Federal	10,805			3,951			(82,186		)
State and local	1,160			(972		)	(979		)
Foreign	(24,815		)	(41,893		)	(51,646		)
Total deferred	(12,850		)	(38,914		)	(134,811		)

Change in valuation allowance	26,640			40,402			100,053
Total provision for income taxes	$	49,574		$	22,099		$	4,035

The change in the valuation allowance does not include the impacts of currency translation adjustments or significant intercompany transactions.

Our tax provision as a percentage of income before tax was 58.6%, 59.6%, and (22.1)% for 2016, 2015, and 2014, respectively. Our actual tax rate differed from the 35% U.S. federal statutory tax rate due to various items. A reconciliation of income taxes at the U.S. federal statutory rate of 35% to the consolidated actual tax rate is as follows:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Income (loss) before income taxes
Domestic	$	196,750		$	115,526		$	86,605
Foreign	(112,123		)	(78,424		)	(104,870		)
Total income (loss) before income taxes	$	84,627		$	37,102		$	(18,265	)

Expected federal income tax provision (benefit)	$	29,619		$	12,986		$	(6,393	)
Goodwill impairment	—			—			119
Change in valuation allowance	26,640			40,402			100,053
Stock-based compensation	2,762			939			1,255
Foreign earnings	(12,584		)	(33,364		)	(31,544		)
Tax credits	(7,471		)	(5,257		)	(91,148		)
Uncertain tax positions, including interest and penalties	3,817			4,274			1,519
Change in tax rates	67			312			(20		)
State income tax provision (benefit), net of federal effect	2,806			(14		)	(1,235		)
U.S. tax provision on foreign earnings	997			203			31,309
Domestic production activities deduction	(2,424		)	(1,100		)	(2,312		)
Local foreign taxes	2,914			1,450			2,295
Other, net	2,431			1,268			137
Total provision for income taxes	$	49,574		$	22,099		$	4,035

Deferred tax assets and liabilities consist of the following:



	At December 31,
	2016			2015
	(in thousands)
Deferred tax assets
Loss carryforwards⁽¹⁾	$	194,381		$	190,545
Tax credits⁽²⁾	53,323			52,131
Accrued expenses	36,336			33,546
Pension plan benefits expense	16,822			16,232
Warranty reserves	21,306			25,129
Depreciation and amortization	15,698			21,499
Equity compensation	6,924			9,303
Inventory valuation	3,086			4,068
Deferred revenue	4,896			9,097
Tax effect of accumulated translation	—			291
Other deferred tax assets, net	13,621			11,770
Total deferred tax assets	366,393			373,611
Valuation allowance	(249,560		)	(235,339		)
Total deferred tax assets, net of valuation allowance	116,833			138,272

Deferred tax liabilities
Depreciation and amortization	(19,995		)	(27,000		)
Tax effect of accumulated translation	(100		)	—
Other deferred tax liabilities, net	(5,698		)	(3,608		)
Total deferred tax liabilities	(25,793		)	(30,608		)
Net deferred tax assets	$	91,040		$	107,664

⁽¹⁾

For tax return purposes at December 31, 2016, we had U.S. federal loss carryforwards of $13.2 million that expire during the years 2020 and 2021. At December 31, 2016, we have net operating loss carryforwards in Luxembourg of $483.5 million that can be carried forward indefinitely, offset by a full valuation allowance. The remaining portion of the loss carryforwards are composed primarily of losses in various other state and foreign jurisdictions. The majority of these losses can be carried forward indefinitely. At December 31, 2016, there was a valuation allowance of $249.6 million primarily associated with foreign loss carryforwards and foreign tax credit carryforwards (discussed below).

⁽²⁾

For tax return purposes at December 31, 2016, we had: (1) U.S. general business credits of $15.3 million, which begin to expire in 2022; (2) U.S. alternative minimum tax credits of $2.5 million that can be carried forward indefinitely; (3) U.S. foreign tax credits of $49.4 million, which begin to expire in 2024; and (4) state tax credits of $10.0 million, which begin to expire in 2017. At December 31, 2016, there was a valuation allowance of $32.3 million associated with foreign tax credit carryforwards, and $6.0 million associated with state tax credit carryforwards.

We recognize valuation allowances to reduce deferred tax assets to the extent we believe it is more likely than not that a portion of such assets will not be realized. In making such determinations, we consider all available favorable and unfavorable evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies, and our ability to carry back losses to prior years. We are required to make assumptions and judgments about potential outcomes that lie outside management’s control. Our most sensitive and critical factors are the projection, source, and character of future taxable income. Although realization is not assured, management believes it is more likely than not that deferred tax assets, net of valuation allowance, will be realized. The amount of deferred tax assets considered realizable, however, could be reduced in the near term if estimates of future taxable income during the carryforward periods are reduced or current tax planning strategies are not implemented.

Our deferred tax assets at December 31, 2016 do not include the tax effect on $40.9 million of excess tax benefits from employee stock plan exercises. Common stock will be increased by approximately $15 million when such excess tax benefits reduce cash taxes payable. See Note 1 for further discussion regarding the impact of adopting ASU 2016-09.

We do not provide U.S. deferred taxes on temporary differences related to our foreign investments that are considered permanent in duration. These temporary differences consist primarily of undistributed foreign earnings of $4.9 million and $8.7 million at December 31, 2016 and 2015, respectively. Foreign taxes have been provided on these undistributed foreign earnings. We have not computed the unrecognized deferred income tax liability on these temporary differences. There are many assumptions that must be considered to calculate the liability, thereby making it impractical to compute at this time.

We are subject to income tax in the United States and numerous foreign jurisdictions. Significant judgment is required in evaluating our tax positions and determining our provision for income taxes. During the ordinary course of business, there are many transactions and calculations for which the ultimate tax determination is uncertain. We establish reserves for tax-related uncertainties based on estimates of whether, and the extent to which, additional taxes will be due. These reserves are established when we believe that certain positions might be challenged despite our belief that our tax return positions are fully supportable. We adjust these reserves in light of changing facts and circumstances, such as the outcome of tax audits. The provision for income taxes includes the impact of reserve positions and changes to reserves that are considered appropriate.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:



	(in thousands)
Unrecognized tax benefits at January 1, 2014	$	28,615
Gross increase to positions in prior years	2,749
Gross decrease to positions in prior years	(1,641		)
Gross increases to current period tax positions	3,008
Audit settlements	—
Decrease related to lapsing of statute of limitations	(1,715		)
Effect of change in exchange rates	(2,870		)
Unrecognized tax benefits at December 31, 2014	$	28,146

Gross increase to positions in prior years	6,461
Gross decrease to positions in prior years	(2,512		)
Gross increases to current period tax positions	25,741
Audit settlements	—
Decrease related to lapsing of statute of limitations	(908		)
Effect of change in exchange rates	(2,048		)
Unrecognized tax benefits at December 31, 2015	$	54,880

Gross increase to positions in prior years	1,164
Gross decrease to positions in prior years	(612		)
Gross increases to current period tax positions	5,071
Audit settlements	(1,116		)
Decrease related to lapsing of statute of limitations	(860		)
Effect of change in exchange rates	(901		)
Unrecognized tax benefits at December 31, 2016	$	57,626



	At December 31,
	2016		2015		2014
	(in thousands)
The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate	$	56,411	$	53,602	$	26,980

If certain unrecognized tax benefits are recognized they would create additional deferred tax assets. These assets would require a full valuation in certain locations based upon present circumstances.

We classify interest expense and penalties related to unrecognized tax benefits and interest income on tax overpayments as components of income tax expense. The net interest and penalties expense recognized is as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Net interest and penalties expense	$	193	$	880	$	469



	At December 31,
	2016		2015
	(in thousands)
Accrued interest	$	2,473	$	2,105
Accrued penalties	2,329		2,577

At December 31, 2016, we are under examination by certain tax authorities for the 2000 to 2015 tax years. The material jurisdictions where we are subject to examination for the 2000 to 2015 tax years include, among others, the U.S., France, Germany, Italy, Brazil and the United Kingdom. No material changes have occurred to previously disclosed assessments. In December 2016, we filed a formal protest letter with the Internal Revenue Service requesting an Appeals hearing regarding the 2011-2013 tax audit assessment received earlier this year relating to research and development tax credits. We believe we have appropriately accrued for the expected outcome of all tax matters and do not currently anticipate that the ultimate resolution of these examinations will have a material adverse effect on our financial condition, future results of operations, or cash flows.

Based upon the timing and outcome of examinations, litigation, the impact of legislative, regulatory, and judicial developments, and the impact of these items on the statute of limitations, it is reasonably possible that the related unrecognized tax benefits could change from those recognized within the next twelve months. However, at this time, an estimate of the range of reasonably possible adjustments to the balance of unrecognized tax benefits cannot be made.

We file income tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. We are subject to income tax examination by tax authorities in our major tax jurisdictions as follows:



Tax Jurisdiction		Years Subject to Audit
U.S. federal		Subsequent to 1999
France		Subsequent to 2009
Germany		Subsequent to 2010
Brazil		Subsequent to 2010
United Kingdom		Subsequent to 2012
Italy		Subsequent to 2007

Commitments and Contingencies (Text Block)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies [Text Block]

Commitments and Contingencies

Commitments

Operating lease rental expense for factories, service and distribution locations, offices, and equipment was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Rental expense	$	14,232	$	15,524	$	19,178

Future minimum lease payments at December 31, 2016, under noncancelable operating leases with initial or remaining terms in excess of one year are as follows:



Year Ending December 31,	Minimum Payments
	(in thousands)
2017	$	13,128
2018	12,238
2019	9,152
2020	6,026
2021	5,363
Beyond 2021	8,510
Future minimum lease payments	$	54,417

Rent expense is recognized straight-line over the lease term, including renewal periods if reasonably assured. We lease most of our sales and distribution locations and administrative offices. Our leases typically contain renewal options similar to the original terms with lease payments that increase based on the consumer price index.

Guarantees and Indemnifications

We are often required to obtain standby letters of credit (LOCs) or bonds in support of our obligations for customer contracts. These standby LOCs or bonds typically provide a guarantee to the customer for future performance, which usually covers the installation phase of a contract and may, on occasion, cover the operations and maintenance phase of outsourcing contracts.

Our available lines of credit, outstanding standby LOCs, and bonds are as follows:



	At December 31,
	2016			2015
	(in thousands)
Credit facilities⁽¹⁾
Multicurrency revolving line of credit	$	500,000		$	500,000
Long-term borrowings	(97,167		)	(151,837		)
Standby LOCs issued and outstanding	(46,103		)	(46,574		)

Net available for additional borrowings under the multi-currency revolving line of credit	$	356,730		$	301,589
Net available for additional standby LOCs under sub-facility⁽²⁾	203,897			253,426

Unsecured multicurrency revolving lines of credit with various financial institutions
Multicurrency revolving line of credit	$	91,809		$	97,989
Standby LOCs issued and outstanding	(21,734		)	(31,122		)
Short-term borrowings⁽³⁾	(69		)	(3,884		)
Net available for additional borrowings and LOCs	$	70,006		$	62,983

Unsecured surety bonds in force	$	48,221		$	87,558


⁽¹⁾	Refer to Note 6 for details regarding our secured credit facilities.


⁽²⁾	During the year ended December 31, 2016, as a result of entering into the first and second amendments to the 2015 credit facility, the maximum limit available for additional standby LOCs under sub-facility was reduced from $300 million to $250 million.


⁽³⁾	Short-term borrowings are included in “Other current liabilities” on the Consolidated Balance Sheets.

In the event any such standby LOC or bond is called, we would be obligated to reimburse the issuer of the standby LOC or bond; however, we do not believe that any outstanding LOC or bond will be called.

We generally provide an indemnification related to the infringement of any patent, copyright, trademark, or other intellectual property right on software or equipment within our sales contracts, which indemnifies the customer from and pays the resulting costs, damages, and attorney’s fees awarded against a customer with respect to such a claim provided that (a) the customer promptly notifies us in writing of the claim and (b) we have the sole control of the defense and all related settlement negotiations. We may also provide an indemnification to our customers for third party claims resulting from damages caused by the negligence or willful misconduct of our employees/agents in connection with the performance of certain contracts. The terms of our indemnifications generally do not limit the maximum potential payments. It is not possible to predict the maximum potential amount of future payments under these or similar agreements.

Legal Matters

We are subject to various legal proceedings and claims of which the outcomes are subject to significant uncertainty. Our policy is to assess the likelihood of any adverse judgments or outcomes related to legal matters, as well as ranges of probable losses. A determination of the amount of the liability required, if any, for these contingencies is made after an analysis of each known issue. A liability is recognized and charged to operating expense when we determine that a loss is probable and the amount can be reasonably estimated. Additionally, we disclose contingencies for which a material loss is reasonably possible, but not probable.

On July 14, 2016, we entered into a confidential settlement agreement with Transdata Incorporated (Transdata) under which Transdata agreed to dismiss with prejudice all pending litigation in various United States District Courts against us and certain of our customers. As a part of the settlement, we received a patent license from Transdata for the use of the patents in future meter production and sales.

In Brazil, the Conselho Administravo de Defesa Economica commenced an investigation of water meter suppliers, including our subsidiary, to determine whether such suppliers participated in agreements or concerted practices to coordinate their commercial policy in Brazil. On October 18, 2016, we settled with the Conselho Administravo de Defesa Economica. The settlement was not material to our results of operations or financial condition.

Itron and its subsidiaries are parties to various employment-related proceedings in jurisdictions where it does business. None of the proceedings are individually material to Itron, and we believe that we have made adequate provision such that the ultimate disposition of the proceedings will not materially affect Itron's business or financial condition.

Warranty

A summary of the warranty accrual account activity is as follows:



	Year Ended December 31,
	2016			2015
	(in thousands)
Beginning balance	$	54,512		$	36,548
New product warranties	7,987			8,380
Other adjustments and expirations	5,933			37,604
Claims activity	(24,364		)	(25,955		)
Effect of change in exchange rates	(766		)	(2,065		)
Ending balance	43,302			54,512
Less: current portion of warranty	24,874			36,927
Long-term warranty	$	18,428		$	17,585

Total warranty expense is classified within cost of revenues and consists of new product warranties issued, costs related to extended warranty contracts, and other changes and adjustments to warranties. Warranty expense was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Total warranty expense	$	13,920	$	45,984	$	9,238

Extended Warranty

A summary of changes to unearned revenue for extended warranty contracts is as follows:



	Year Ended December 31,
	2016			2015
	(in thousands)
Beginning balance	$	33,654		$	34,138
Unearned revenue for new extended warranties	1,437			2,792
Unearned revenue recognized	(3,594		)	(2,832		)
Effect of change in exchange rates	52			(444		)
Ending balance	31,549			33,654
Less: current portion of unearned revenue for extended warranty	4,226			3,565
Long-term unearned revenue for extended warranty within other long-term obligations	$	27,323		$	30,089

Health Benefits

We are self insured for a substantial portion of the cost of our U.S. employee group health insurance. We purchase insurance from a third party, which provides individual and aggregate stop loss protection for these costs. Each reporting period, we expense the costs of our health insurance plan including paid claims, the change in the estimate of incurred but not reported (IBNR) claims, taxes, and administrative fees (collectively, the plan costs).

Plan costs were as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Plan costs	$	27,276	$	25,355	$	23,206

IBNR accrual, which is included in wages and benefits payable, was as follows:



	At December 31,
	2016		2015
	(in thousands)
IBNR accrual	$	2,441	$	2,051

Our IBNR accrual and expenses may fluctuate due to the number of plan participants, claims activity, and deductible limits. For our employees located outside of the United States, health benefits are provided primarily through governmental social plans, which are funded through employee and employer tax withholdings.

Restructuring (Text Block)

12 Months Ended

Dec. 31, 2016

Restructuring and Related Activities [Abstract]

Restructuring, Impairment, and Other Activities Disclosure [Text Block]

Restructuring

2016 Projects

On September 1, 2016, we announced projects (2016 Projects) to restructure various company activities in order to improve operational efficiencies, reduce expenses and improve competiveness. We expect to close or consolidate several facilities and reduce our global workforce as a result of the restructuring.

The 2016 Projects began during the three months ended September 30, 2016, and we expect to substantially complete the 2016 Projects by the end of 2018. Many of the affected employees are represented by unions or works councils, which require consultation, and potential restructuring projects may be subject to regulatory approval, both of which could impact the timing of charges, total expected charges, cost recognized, and planned savings in certain jurisdictions.

The total expected restructuring costs, the restructuring costs recognized during the year ended December 31, 2016, and the remaining expected restructuring costs as of December 31, 2016 related to the 2016 Projects are as follows:



	Total Expected Costs at December 31, 2016		Costs Recognized During the Year Ended December 31, 2016		Remaining Costs to be Recognized at December 31, 2016
	(in thousands)
Employee severance costs	$	44,186	$	39,686	$	4,500
Asset impairments & net loss on sale or disposal	7,219		7,219		—
Other restructuring costs	16,389		889		15,500
Total	$	67,794	$	47,794	$	20,000

Segments:
Electricity	$	10,827	$	8,827	$	2,000
Gas	34,468		23,968		10,500
Water	20,061		13,061		7,000
Corporate unallocated	2,438		1,938		500
Total	$	67,794	$	47,794	$	20,000

2014 Projects

In November 2014, our management approved restructuring projects (2014 Projects) to restructure our Electricity business and related general and administrative activities, along with certain Gas and Water activities, to improve operational efficiencies and reduce expenses. The 2014 Projects include consolidation of certain facilities and reduction of our global workforce. The improved structure positions us to meet our long-term profitability goals by better aligning global operations with markets where we can serve our customers profitably.

We began implementing these projects in the fourth quarter of 2014, and substantially completed them in the third quarter of 2016. Project activities will continue through the fourth quarter of 2017, however, no further costs are expected to be recognized related to the 2014 Projects.

The total expected restructuring costs, the restructuring costs recognized in prior periods, the restructuring costs recognized during the year ended December 31, 2016, and the remaining expected restructuring costs as of December 31, 2016 related to the 2014 Projects are as follows:



	Total Expected Costs at December 31, 2016		Costs Recognized in Prior Periods		Costs Recognized During the Year Ended December 31, 2016			Remaining Costs to be Recognized at December 31, 2016
	(in thousands)
Employee severance costs	$	34,630	$	34,373	$	257		$	—
Asset impairments & net loss on sale or disposal	8,849		8,880		(31		)	—
Other restructuring costs	4,999		3,929		1,070			—
Total	$	48,478	$	47,182	$	1,296		$	—

Segments:
Electricity	$	20,610	$	21,743	$	(1,133	)	$	—
Gas	13,631		11,855		1,776			—
Water	1,995		1,940		55			—
Corporate unallocated	12,242		11,644		598			—
Total	$	48,478	$	47,182	$	1,296		$	—

2013 Projects

In September 2013, our management approved projects (the 2013 Projects) to restructure our operations to improve profitability and increase efficiencies. We began implementing these projects in the third quarter of 2013, and completed the projects during the third quarter of 2016.

The 2013 Projects resulted in approximately $26.2 million of restructuring expense, which was recognized from the third quarter of 2013 through the fourth quarter of 2014.

The following table summarizes the activity within the restructuring related balance sheet accounts for the 2016, 2014 and 2013 Projects during the year ended December 31, 2016:



	Accrued Employee Severance			Asset Impairments & Net Loss on Sale or Disposal			Other Accrued Costs			Total
	(in thousands)
Beginning balance, January 1, 2016	$	26,533		$	—		$	3,048		$	29,581
Costs incurred and charged to expense	39,943			7,188			1,959			49,090
Cash payments	(18,452		)	—			(2,389		)	(20,841		)
Non-cash items	—			(7,188		)	—			(7,188		)
Effect of change in exchange rates	(2,656		)	—			(16		)	(2,672		)
Ending balance, December 31, 2016	$	45,368		$	—		$	2,602		$	47,970

Asset impairments are determined at the asset group level. Revenues and net operating income from the activities we have exited or will exit under the restructuring projects are not material to our operating segments or consolidated results.

Other restructuring costs include expenses for employee relocation, professional fees associated with employee severance, and costs to exit the facilities once the operations in those facilities have ceased. Costs associated with restructuring activities are generally presented in the Consolidated Statements of Operations as restructuring, except for certain costs associated with inventory write-downs, which are classified within cost of revenues, and accelerated depreciation expense, which is recognized according to the use of the asset.

The current restructuring liabilities were $26.2 million and $25.2 million as of December 31, 2016 and 2015, respectively. The current restructuring liabilities are classified within other current liabilities on the Consolidated Balance Sheets. The long-term restructuring liabilities balances were $21.8 million and $4.4 million as of December 31, 2016 and 2015, respectively. The long-term restructuring liabilities are classified within other long-term obligations on the Consolidated Balance Sheets, and include facility exit costs and severance accruals.

Shareholders' Equity (Text Block)

12 Months Ended

Dec. 31, 2016

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

Shareholders’ Equity

Preferred Stock

We have authorized the issuance of 10 million shares of preferred stock with no par value. In the event of a liquidation, dissolution, or winding up of the affairs of the corporation, whether voluntary or involuntary, the holders of any outstanding preferred stock will be entitled to be paid a preferential amount per share to be determined by our Board of Directors prior to any payment to holders of common stock. There was no preferred stock issued or outstanding at December 31, 2016, 2015, and 2014.

Stock Repurchase Plan

On February 19, 2015, our Board authorized a new repurchase program of up to $50 million of our common stock over a 12-month period, beginning February 19, 2015. From February 19, 2015 through December 31, 2015, we repurchased 743,444 shares of our common stock, totaling $25.0 million. This program expired on February 19, 2016 with no share repurchases made subsequent to December 31, 2015.

Other Comprehensive Income (Loss)

OCI is reflected as a net increase (decrease) to shareholders’ equity and is not reflected in our results of operations. The changes in the components of AOCI, net of tax, were as follows:



	Foreign Currency Translation Adjustments			Net Unrealized Gain (Loss) on Derivative Instruments			Net Unrealized Gain (Loss) on Nonderivative Instruments			Pension Benefit Obligation Adjustments			Accumulated Other Comprehensive Income (Loss)
	(in thousands)
Balances at January 1, 2014	$	4,217		$	(1,256	)	$	(14,380	)	$	(9,885	)	$	(21,304	)
OCI before reclassifications	(89,297		)	(566		)	—			(25,702		)	(115,565		)
Amounts reclassified from AOCI	—			1,054			—			755			1,809
Total other comprehensive income (loss)	(89,297		)	488			—			(24,947		)	(113,756		)
Balances at December 31, 2014	$	(85,080	)	$	(768	)	$	(14,380	)	$	(34,832	)	$	(135,060	)
OCI before reclassifications	(73,891		)	76			—			4,570			(69,245		)
Amounts reclassified from AOCI	962			1,010			—			1,726			3,698
Total other comprehensive income (loss)	(72,929		)	1,086			—			6,296			(65,547		)
Balances at December 31, 2015	$	(158,009	)	$	318		$	(14,380	)	$	(28,536	)	$	(200,607	)
OCI before reclassifications	(23,570		)	(1,087		)	—			(6,191		)	(30,848		)
Amounts reclassified from AOCI	(1,407		)	812			—			2,723			2,128
Total other comprehensive income (loss)	(24,977		)	(275		)	—			(3,468		)	(28,720		)
Balances at December 31, 2016	$	(182,986	)	$	43		$	(14,380	)	$	(32,004	)	$	(229,327	)

The before-tax amount, income tax (provision) benefit, and net-of-tax amount related to each component of OCI during the reporting periods were as follows:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Before-tax amount
Foreign currency translation adjustment	$	(23,280	)	$	(74,219	)	$	(89,329	)
Foreign currency translation adjustment reclassified into net income on disposal	(1,407		)	962			—
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(1,768		)	123			(915		)
Net hedging (gain) loss reclassified into net income (loss)	1,322			1,639			1,704
Pension benefit obligation adjustment	(3,504		)	8,971			(25,270		)
Total other comprehensive income (loss), before tax	(28,637		)	(62,524		)	(113,810		)

Tax (provision) benefit
Foreign currency translation adjustment	(290		)	328			32
Foreign currency translation adjustment reclassified into net income on disposal	—			—			—
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	681			(47		)	349
Net hedging (gain) loss reclassified into net income (loss)	(510		)	(629		)	(650		)
Pension benefit obligation adjustment	36			(2,675		)	323
Total other comprehensive income (loss) tax (provision) benefit	(83		)	(3,023		)	54

Net-of-tax amount
Foreign currency translation adjustment	(23,570		)	(73,891		)	(89,297		)
Foreign currency translation adjustment reclassified into net income on disposal	(1,407		)	962			—
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(1,087		)	76			(566		)
Net hedging (gain) loss reclassified into net income (loss)	812			1,010			1,054
Pension benefit obligation adjustment	(3,468		)	6,296			(24,947		)
Total other comprehensive income (loss), net of tax	$	(28,720	)	$	(65,547	)	$	(113,756	)

Details about the AOCI components reclassified to the Consolidated Statements of Operations during the reporting periods are as follows:



	Amount Reclassified from AOCI⁽¹⁾
	Year Ended December 31,									Affected Line Item in the Income Statement
	2016			2015			2014
	(in thousands)
Amortization of defined benefit pension items
Prior-service costs	$	(58	)	$	(59	)	$	(138	)	⁽²⁾
Actuarial losses	(1,351		)	(1,979		)	(572		)	⁽²⁾
Loss on settlement	(1,343		)	(375		)	(55		)	⁽²⁾
Other	—			(46		)	—			⁽²⁾
Total, before tax	(2,752		)	(2,459		)	(765		)	Income (loss) before income taxes
Tax benefit	29			733			10			Income tax provision
Total, net of tax	$	(2,723	)	$	(1,726	)	$	(755	)	Net income (loss)


⁽¹⁾	Amounts in parenthesis indicate debits to the Consolidated Statements of Operations.


⁽²⁾	These AOCI components are included in the computation of net periodic pension cost. Refer to Note 8 for additional details.

Reclassification of amounts related to foreign currency translation adjustment relate to the sale of a subsidiary and are included in restructuring expense in the Consolidated Statements of Operations for the years ended December 31, 2016 and 2015.

Refer to Note 7 for additional details related to derivative activities that resulted in reclassification of AOCI to the Consolidated Statements of Operations.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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+ Details

Fair Values of Financial Instruments (Text Block)

12 Months Ended

Dec. 31, 2016

Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]

Fair Values of Financial Instruments [Text Block]

Fair Values of Financial Instruments

The fair values at December 31, 2016 and 2015 do not reflect subsequent changes in the economy, interest rates, tax rates, and other variables that may affect the determination of fair value.



	December 31, 2016				December 31, 2015
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
			(in thousands)
Assets
Cash and cash equivalents	$	133,565	$	133,565	$	131,018	$	131,018
Foreign exchange forwards	169		169		27		27
Interest rate swaps	1,830		1,830		1,632		1,632
Interest rate caps	946		946		1,423		1,423

Liabilities
Credit facility
USD denominated term loan	$	208,125	$	205,676	$	219,375	$	217,830
Multicurrency revolving line of credit	97,167		95,906		151,837		150,570
Interest rate swaps	934		934		868		868
Foreign exchange forwards	449		449		99		99

The following methods and assumptions were used in estimating fair values:

Cash and cash equivalents: Due to the liquid nature of these instruments, the carrying value approximates fair value (Level 1).

Credit Facility - term loan and multicurrency revolving line of credit: The term loan and revolver are not traded publicly. The fair values, which are determined based upon a hypothetical market participant, are calculated using a discounted cash flow model with Level 2 inputs, including estimates of incremental borrowing rates for debt with similar terms, maturities, and credit profiles. Refer to Note 6 for a further discussion of our debt.

Derivatives: See Note 7 for a description of our methods and assumptions in determining the fair value of our derivatives, which were determined using Level 2 inputs.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Segment Information (Text Block)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment Information [Text Block]

Segment Information

We operate under the Itron brand worldwide and manage and report under three operating segments, Electricity, Gas, and Water. Our Water operating segment includes both our global water and heat solutions. This structure allows each segment to develop its own go-to-market strategy, prioritize its marketing and product development requirements, and focus on its strategic investments. Our sales, marketing, and delivery functions are managed under each segment. Our product development and manufacturing operations are managed on a worldwide basis to promote a global perspective in our operations and processes and yet still maintain alignment with the segments.

We have three GAAP measures of segment performance: revenues, gross profit (margin), and operating income (margin). Our operating segments have distinct products, and, therefore, intersegment revenues are minimal. Certain operating expenses are allocated to the operating segments based upon internally established allocation methodologies. Corporate operating expenses, interest income, interest expense, other income (expense), and income tax provision are not allocated to the segments, nor are included in the measure of segment profit or loss. In addition, we allocate only certain production assets and intangible assets to our operating segments. We do not manage the performance of the segments on a balance sheet basis.

Segment Products



Electricity	Standard electricity (electromechanical and electronic) meters; smart metering solutions that include one or several of the following: smart electricity meters; smart electricity communication modules; prepayment systems, including smart key, keypad, and smart card communication technologies; smart systems including handheld, mobile, and fixed network collection technologies; smart network technologies; meter data management software; knowledge application solutions; installation; implementation; and professional services including consulting and analysis.

Gas	Standard gas meters; smart metering solutions that include one or several of the following: smart gas meters; smart gas communication modules; prepayment systems, including smart key, keypad, and smart card communication technologies; smart systems, including handheld, mobile, and fixed network collection technologies; smart network technologies; meter data management software; knowledge application solutions installation; implementation; and professional services including consulting and analysis.

Water	Standard water and heat meters; smart metering solutions that include one or several of the following: smart water meters and communication modules; smart heat meters; smart systems including handheld, mobile, and fixed network collection technologies; meter data management software; knowledge application solutions; installation; implementation; and professional services including consulting and analysis.

Revenues, gross profit, and operating income associated with our segments were as follows:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Revenues
Electricity	$	938,374		$	820,306		$	771,857
Gas	569,476			543,805			599,091
Water	505,336			519,422			576,668
Total Company	$	2,013,186		$	1,883,533		$	1,947,616

Gross profit
Electricity	$	282,677		$	225,446		$	200,249
Gas	205,063			185,559			211,623
Water	172,580			145,680			202,178
Total Company	$	660,320		$	556,685		$	614,050

Operating income (loss)
Electricity	$	68,287		$	31,104		$	(77,751	)
Gas	66,813			67,471			76,101
Water	37,266			19,864			71,356
Corporate unallocated	(76,155		)	(65,593		)	(69,226		)
Total Company	96,211			52,846			480
Total other income (expense)	(11,584		)	(15,744		)	(18,745		)
Income (loss) before income taxes	$	84,627		$	37,102		$	(18,265	)

During the second quarter of 2015, we concluded it was necessary to issue a product replacement notification to customers of our Water segment who had purchased certain communication modules manufactured between July 2013 and December 2014. We determined that a component of the modules was failing prematurely. This resulted in a decrease to gross profit of $29.4 million for the year ended December 31, 2015. After adjusting for the tax impact, this charge resulted in a decrease to basic and diluted EPS of $0.47 for the year ended December 31, 2015.

During 2014, in our Electricity segment, we revised our estimate of the cost to complete an OpenWay project in North America. This resulted in a decrease to gross profit of $15.9 million, which decreased basic and diluted EPS by $0.25 for the year ended December 31, 2014.

For the years ended December 31, 2016, 2015, and 2014, no single customer represented more than 10% of total Company or the Gas or Water operating segment revenues. Two customers represented 12% and 10% of total Electricity revenue, respectively, for the year ended December 31, 2016. No customer represented more than 10% of Electricity revenue for the years ended December 31, 2015 and 2014.

Revenues by region were as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
United States and Canada	$	1,126,787	$	997,293	$	875,796
Europe, Middle East, and Africa (EMEA)	698,106		701,301		849,841
Other	188,293		184,939		221,979
Total Company	$	2,013,186	$	1,883,533	$	1,947,616

Revenues are allocated to countries and regions based on the location of the selling entity.

Property, plant, and equipment, net, by geographic area were as follows:



	At December 31,
	2016		2015
	(in thousands)
United States	$	70,435	$	72,179
Outside United States	106,023		118,077
Total Company	$	176,458	$	190,256

Depreciation and amortization expense associated with our segments was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Electricity	$	28,468	$	35,896	$	47,889
Gas	20,714		20,288		25,706
Water	18,675		19,459		24,257
Corporate Unallocated	461		350		287
Total Company	$	68,318	$	75,993	$	98,139

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Quarterly Results (Unaudited) (Text Block)

12 Months Ended

Dec. 31, 2016

Quarterly Results (Unaudited) [Abstract]

Quarterly Financial Information [Text Block]

Quarterly Results (Unaudited)



	First Quarter		Second Quarter			Third Quarter			Fourth Quarter		Total Year
	(in thousands, except per share data)
2016
Statement of operations data (unaudited):
Revenues	$	497,590	$	513,024		$	506,859		$	495,713	$	2,013,186
Gross profit	163,203		169,705			170,749			156,663		660,320
Net income (loss) attributable to Itron, Inc.	10,089		19,917			(9,885		)	11,649		31,770

Earnings (loss) per common share - Basic⁽¹⁾	$	0.27	$	0.52		$	(0.26	)	$	0.30	$	0.83
Earnings (loss) per common share - Diluted⁽¹⁾	$	0.26	$	0.52		$	(0.26	)	$	0.30	$	0.82


	First Quarter		Second Quarter			Third Quarter			Fourth Quarter		Total Year
	(in thousands, except per share data)
2015
Statement of operations data (unaudited):
Revenues	$	446,746	$	470,811		$	469,528		$	496,448	$	1,883,533
Gross profit	138,422		118,554			147,290			152,419		556,685
Net income (loss) attributable to Itron, Inc.	5,398		(14,346		)	12,640			8,986		12,678

Earnings (loss) per common share - Basic⁽¹⁾	$	0.14	$	(0.37	)	$	0.33		$	0.23	$	0.33
Earnings (loss) per common share - Diluted⁽¹⁾	$	0.14	$	(0.37	)	$	0.33		$	0.23	$	0.33


⁽¹⁾	The sum of the quarterly EPS data presented in the table may not equal the annual results due to rounding and the impact of dilutive securities on the annual versus the quarterly EPS calculations.

During the third quarter of 2016, we announced the 2016 Projects to restructure various company activities in order to improve operational efficiencies, reduce expenses and improve competiveness. As a result, we recognized $40.0 million and $7.8 million in restructuring costs during the third and fourth quarters of 2016, respectively, related to the 2016 Projects.

For the year ended December 31, 2015, management concluded earnings fell below the threshold at which incentive compensation was appropriate. As a result, $13.3 million of previously accrued compensation expense was reversed in the fourth quarter of 2015.

During the second quarter of 2015, we concluded it was necessary to issue a product replacement notification to customers of our Water segment who had purchased certain communication modules manufactured between July 2013 and December 2014. We determined that a component of the modules was failing prematurely. As a result, we recognized a warranty charge of $23.6 million during the second quarter of 2015.

Subsequent Event (Text Block)	12 Months Ended
Subsequent Event (Text Block)	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events Stock Repurchases On February 23, 2017, Itron's Board of Directors authorized a new repurchase program of up to $50 million of our common stock over a 12-month period, beginning February 23, 2017. Repurchases are made in the open market or in privately negotiated transactions and in accordance with applicable securities laws. Repurchases are subject to the Company's alternative uses of capital as well as financial, market, and industry conditions.

Valuation and Qualifying Accounts (Text Block)

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

VALUATION AND QUALIFYING ACCOUNTS



Description	Balance at Beginning of Period		Other Adjustments			Additions Charged to Costs and Expenses		Balance at End of Period, Noncurrent
	(in thousands)
Year ended December 31, 2016:
Deferred tax assets valuation allowance	$	235,339	$	(12,419	)	$	26,640	$	249,560
Year ended December 31, 2015:
Deferred tax assets valuation allowance	$	257,728	$	(62,791	)	$	40,402	$	235,339
Year ended December 31, 2014:
Deferred tax assets valuation allowance	$	162,588	$	(4,913	)	$	100,053	$	257,728

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Consolidation [Policy Text Block]	Basis of Consolidation We consolidate all entities in which we have a greater than 50% ownership interest or in which we exercise control over the operations. We use the equity method of accounting for entities in which we have a 50% or less investment and exercise significant influence. Entities in which we have less than a 20% investment and where we do not exercise significant influence are accounted for under the cost method. Intercompany transactions and balances are eliminated upon consolidation. Noncontrolling Interests In several of our consolidated international subsidiaries, we have joint venture partners, who are minority shareholders. Although these entities are not wholly-owned by Itron, we consolidate them because we have a greater than 50% ownership interest or because we exercise control over the operations. The noncontrolling interest balance is adjusted each period to reflect the allocation of net income (loss) and other comprehensive income (loss) attributable to the noncontrolling interests, as shown in our Consolidated Statements of Operations and our Consolidated Statements of Comprehensive Income (Loss) as well as contributions from and distributions to the owners. The noncontrolling interest balance in our Consolidated Balance Sheets represents the proportional share of the equity of the joint venture entities, which is attributable to the minority shareholders.
Cash and Cash Equivalents [Policy Text Block]	Cash and Cash Equivalents We consider all highly liquid instruments with remaining maturities of three months or less at the date of acquisition to be cash equivalents.
Accounts Receivable and Allowance for Doubtful Accounts [Policy Text Block]	Accounts Receivable,net Accounts receivable are recognized for invoices issued to customers in accordance with our contractual arrangements. Interest and late payment fees are minimal. Unbilled receivables are recognized when revenues are recognized upon product shipment or service delivery and invoicing occurs at a later date. We recognize an allowance for doubtful accounts representing our estimate of the probable losses in accounts receivable at the date of the balance sheet based on our historical experience of bad debts and our specific review of outstanding receivables. Accounts receivable are written-off against the allowance when we believe an account, or a portion thereof, is no longer collectible.
Inventories [Policy Text Block]	Inventories Inventories are stated at the lower of cost or market using the first-in, first-out method. Cost includes raw materials and labor, plus applied direct and indirect costs.
Derivative Instruments [Policy Text Block]	Derivative Instruments All derivative instruments, whether designated in hedging relationships or not, are recognized on the Consolidated Balance Sheets at fair value as either assets or liabilities. The components and fair values of our derivative instruments are determined using the fair value measurements of significant other observable inputs (Level 2), as defined by GAAP. The fair value of our derivative instruments may switch between an asset and a liability depending on market circumstances at the end of the period. We include the effect of our counterparty credit risk based on current published credit default swap rates when the net fair value of our derivative instruments are in a net asset position and the effect of our own nonperformance risk when the net fair value of our derivative instruments are in a net liability position. For any derivative designated as a fair value hedge, the changes in the fair value of the derivative and of the hedged item attributable to the hedged risk are recognized in earnings. For any derivative designated as a cash flow hedge, the effective portions of changes in the fair value of the derivative are recognized as a component of other comprehensive income (loss) (OCI) and are recognized in earnings when the hedged item affects earnings. Ineffective portions of cash flow hedges are recognized in other income (expense) in the Consolidated Statements of Operations. For a hedge of a net investment, the effective portion of any unrealized gain or loss from the foreign currency revaluation of the hedging instrument is reported in OCI as a net unrealized gain or loss on derivative instruments. Upon termination of a net investment hedge, the net derivative gain/loss will remain in accumulated other comprehensive income (loss) (AOCI) until such time when earnings are impacted by a sale or liquidation of the associated operations. Ineffective portions of fair value changes or the changes in fair value of derivative instruments that do not qualify for hedging activities are recognized in other income (expense) in the Consolidated Statements of Operations. We classify cash flows from our derivative programs as cash flows from operating activities in the Consolidated Statements of Cash Flows. Derivatives are not used for trading or speculative purposes. Our derivatives are with credit worthy multinational commercial banks, with whom we have master netting agreements; however, our derivative positions are not recognized on a net basis in the Consolidated Balance Sheets. There are no credit-risk-related contingent features within our derivative instruments. Refer to Note 7 and Note 14 for further disclosures of our derivative instruments and their impact on OCI.
Property, Plant, and Equipment [Policy Text Block]	Property, Plant, and Equipment Property, plant, and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, generally 30 years for buildings and improvements and three to ten years for machinery and equipment, computers and software, and furniture. Leasehold improvements are capitalized and depreciated over the term of the applicable lease, including renewable periods if reasonably assured, or over the useful lives, whichever is shorter. Construction in process represents capital expenditures incurred for assets not yet placed in service. Costs related to internally developed software and software purchased for internal uses are capitalized and are amortized over the estimated useful lives of the assets. Repair and maintenance costs are recognized as incurred. We have no major planned maintenance activities. We review long-lived assets for impairment whenever events or circumstances indicate the carrying amount of an asset group may not be recoverable. Assets held for sale are classified within other current assets in the Consolidated Balance Sheets, are reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. Gains and losses from asset disposals and impairment losses are classified within the Consolidated Statement of Operations according to the use of the asset, except those gains and losses recognized in conjunction with our restructuring activities, which are classified within restructuring expense.
Prepaid Debt Fees [Policy Text Block]	Prepaid Debt Fees Prepaid debt fees for term debt represent the capitalized direct costs incurred related to the issuance of debt and are recognized as a direct deduction from the carrying amount of the corresponding debt liability. We have elected to present prepaid debt fees for revolving debt within other long-term assets in the Consolidated Balance Sheets. These costs are amortized to interest expense over the terms of the respective borrowings, including contingent maturity or call features, using the effective interest method, or straight-line method when associated with a revolving credit facility. When debt is repaid early, the related portion of unamortized prepaid debt fees is written off and included in interest expense.
Business Combinations [Policy Text Block]	Business Combinations On the date of acquisition, the assets acquired, liabilities assumed, and any noncontrolling interests in the acquiree are recognized at their fair values. The acquiree's results of operations are also included as of the date of acquisition in our consolidated results. Intangible assets that arise from contractual/legal rights, or are capable of being separated, as well as in-process research and development (IPR&D), are measured and recognized at fair value, and amortized over the estimated useful life. IPR&D is not amortized until such time as the associated development projects are completed or terminated. If a development project is completed, the IPR&D is reclassified as a core technology intangible asset and amortized over its estimated useful life. If the development project is terminated, the recorded value of the associated IPR&D is immediately recognized. If practicable, assets acquired and liabilities assumed arising from contingencies are measured and recognized at fair value. If not practicable, such assets and liabilities are measured and recognized when it is probable that a gain or loss has occurred and the amount can be reasonably estimated. The residual balance of the purchase price, after fair value allocations to all identified assets and liabilities, represents goodwill. Acquisition-related costs are recognized as incurred. Restructuring costs associated with an acquisition are generally recognized in periods subsequent to the acquisition date, and changes in deferred tax asset valuation allowances and acquired income tax uncertainties, including penalties and interest, after the measurement period are recognized as a component of the provision for income taxes. Our acquisitions may include contingent consideration, which require us to recognize the fair value of the estimated liability at the time of the acquisition. Subsequent changes in the estimate of the amount to be paid under the contingent consideration arrangement are recognized in the Consolidated Statements of Operations.
Goodwill and Intangible Assets [Policy Text Block]	Goodwill and Intangible Assets Goodwill and intangible assets may result from our business acquisitions. Intangible assets may also result from the purchase of assets and intellectual property in a transaction that does not qualify as a business combination. We use estimates, including estimates of useful lives of intangible assets, the amount and timing of related future cash flows, and fair values of the related operations, in determining the value assigned to goodwill and intangible assets. Our finite-lived intangible assets are amortized over their estimated useful lives based on estimated discounted cash flows, generally three years to seven years for core-developed technology and customer contracts and relationships. Finite-lived intangible assets are tested for impairment at the asset group level when events or changes in circumstances indicate the carrying value may not be recoverable. Indefinite-lived intangible assets are tested for impairment annually, when events or changes in circumstances indicate the asset may be impaired, or at the time when their useful lives are determined to be no longer indefinite. Goodwill is assigned to our reporting units based on the expected benefit from the synergies arising from each business combination, determined by using certain financial metrics, including the forecasted discounted cash flows associated with each reporting unit. Each reporting unit corresponds with its respective operating segment. We test goodwill for impairment each year as of October 1, or more frequently should a significant impairment indicator occur. As part of the impairment test, we may elect to perform an assessment of qualitative factors. If this qualitative assessment indicates that it is more likely than not that the fair value of a reporting unit, including goodwill, is less than its carrying amount, or if we elect to bypass the qualitative assessment, we would then proceed with the two-step impairment test. The impairment test involves comparing the fair values of the reporting units to their carrying amounts. If the carrying amount of a reporting unit exceeds its fair value, a second step is required to measure the goodwill impairment loss amount. This second step determines the current fair values of all assets and liabilities of the reporting unit and then compares the implied fair value of the reporting unit's goodwill to the carrying amount of that goodwill. If the carrying amount of the reporting unit's goodwill exceeds the implied fair value of the goodwill, an impairment loss is recognized in an amount equal to the excess. Determining the fair value of a reporting unit is judgmental in nature and involves the use of significant estimates and assumptions. We forecast discounted future cash flows at the reporting unit level using risk-adjusted discount rates and estimated future revenues and operating costs, which take into consideration factors such as existing backlog, expected future orders, supplier contracts, and expectations of competitive and economic environments. We also identify similar publicly traded companies and develop a correlation, referred to as a multiple, to apply to the operating results of the reporting units. These combined fair values are then reconciled to the aggregate market value of our common stock on the date of valuation, while considering a reasonable control premium.
Contingencies [Policy Text Block]	Contingencies A loss contingency is recognized if it is probable that an asset has been impaired or a liability has been incurred and the amount of the loss can be reasonably estimated. We evaluate, among other factors, the degree of probability of an unfavorable outcome and our ability to make a reasonable estimate of the amount of the ultimate loss. Loss contingencies that we determine to be reasonably possible, but not probable, are disclosed but not recognized. Changes in these factors and related estimates could materially affect our financial position and results of operations. Legal costs to defend against contingent liabilities are recognized as incurred.
Compensation Related Costs, Policy [Policy Text Block]	Bonus and Profit Sharing We have various employee bonus and profit sharing plans, which provide award amounts for the achievement of financial and nonfinancial targets. If management determines it is probable that the targets will be achieved, and the amounts can be reasonably estimated, a compensation accrual is recognized based on the proportional achievement of the financial and nonfinancial targets. Although we monitor and accrue expenses quarterly based on our progress toward the achievement of the targets, the actual results may result in awards that are significantly greater or less than the estimates made in earlier quarters.
Warranty [Policy Text Block]	Warranty We offer standard warranties on our hardware products and large application software products. We accrue the estimated cost of new product warranties based on historical and projected product performance trends and costs during the warranty period. Testing of new products in the development stage helps identify and correct potential warranty issues prior to manufacturing. Quality control efforts during manufacturing reduce our exposure to warranty claims. When testing or quality control efforts fail to detect a fault in one of our products, we may experience an increase in warranty claims. We track warranty claims to identify potential warranty trends. If an unusual trend is noted, an additional warranty accrual would be recognized if a failure event is probable and the cost can be reasonably estimated. When new products are introduced, our process relies on historical averages of similar products until sufficient data is available. As actual experience on new products becomes available, it is used to modify the historical averages to ensure the expected warranty costs are within a range of likely outcomes. Management regularly evaluates the sufficiency of the warranty provisions and makes adjustments when necessary. The warranty allowances may fluctuate due to changes in estimates for material, labor, and other costs we may incur to repair or replace projected product failures, and we may incur additional warranty and related expenses in the future with respect to new or established products, which could adversely affect our financial position and results of operations. The long-term warranty balance includes estimated warranty claims beyond one year. Warranty expense is classified within cost of revenues.
Costs Associated with Exit or Disposal Activities or Restructurings, Policy	Restructuring We recognize a liability for costs associated with an exit or disposal activity under a restructuring project in the period in which the liability is incurred. Employee termination benefits considered postemployment benefits are accrued when the obligation is probable and estimable, such as benefits stipulated by human resource policies and practices or statutory requirements. One-time termination benefits are recognized at the date the employee is notified. If the employee must provide future service greater than 60 days, such benefits are recognized ratably over the future service period. For contract termination costs, we recognize a liability upon the termination of a contract in accordance with the contract terms or the cessation of the use of the rights conveyed by the contract, whichever occurs later. Asset impairments associated with a restructuring project are determined at the asset group level. An impairment may be recognized for assets that are to be abandoned, are to be sold for less than net book value, or are held for sale in which the estimated proceeds less costs to sell are less than the net book value. We may also recognize impairment on an asset group, which is held and used, when the carrying value is not recoverable and exceeds the asset group's fair value. If an asset group is considered a business, a portion of our goodwill balance is allocated to it based on relative fair value. If the sale of an asset group under a restructuring project results in proceeds that exceed the net book value of the asset group, the resulting gain is recognized within restructuring expense in the Consolidated Statements of Operations.
Defined Benefit Pension Plans [Policy Text Block]	Defined Benefit Pension Plans We sponsor both funded and unfunded defined benefit pension plans for certain international employees. We recognize a liability for the projected benefit obligation in excess of plan assets or an asset for plan assets in excess of the projected benefit obligation. We also recognize the funded status of our defined benefit pension plans on our Consolidated Balance Sheets and recognize as a component of OCI, net of tax, the actuarial gains or losses and prior service costs or credits, if any, that arise during the period but that are not recognized as components of net periodic benefit cost. If actuarial gains and losses exceed ten percent of the greater of plan assets or plan liabilities, we amortize them over the employees' average future service period.
Share Repurchase Policy [Policy Text Block]	Share Repurchase Plan From time to time, we may repurchase shares of Itron common stock under programs authorized by our Board of Directors. Share repurchases are made in the open market or in privately negotiated transactions and in accordance with applicable securities laws. Under applicable Washington State law, shares repurchased are retired and not displayed separately as treasury stock on the financial statements; the value of the repurchased shares is deducted from common stock.
Revenue Recognition [Policy Text Block]	Revenue Recognition Revenues consist primarily of hardware sales, software license fees, software implementation, project management services, installation, consulting, and post-sale maintenance support. Revenues are recognized when (1) persuasive evidence of an arrangement exists, (2) delivery has occurred or services have been rendered, (3) the sales price is fixed or determinable, and (4) collectability is reasonably assured. Many of our revenue arrangements involve multiple deliverables, which combine two or more of the following: hardware, meter reading system software, installation, and/or project management services. Separate contracts entered into with the same customer that meet certain criteria such as those that are entered into at or near the same time are evaluated as one single arrangement for purposes of applying multiple element arrangement revenue recognition. Revenue arrangements with multiple deliverables are divided into separate units of accounting at the inception of the arrangement and as each item in the arrangement is delivered. If the delivered item(s) has value to the customer on a standalone basis and delivery/performance of the undelivered item(s) is probable. The total arrangement consideration is allocated among the separate units of accounting based on their relative fair values and the applicable revenue recognition criteria are then considered for each unit of accounting. The amount allocable to a delivered item is limited to the amount that we are entitled to collect and that is not contingent upon the delivery/performance of additional items. Revenues for each deliverable are then recognized based on the type of deliverable, such as 1) when the products are shipped, 2) services are delivered, 3) percentage-of-completion for implementation services, 4) upon receipt of customer acceptance, or 5) transfer of title and risk of loss. The majority of our revenue is recognized when products are shipped to or received by a customer or when services are provided. Hardware revenues are generally recognized at the time of shipment, receipt by the customer, or, if applicable, upon completion of customer acceptance provisions. Under contract accounting where revenue is recognized using percentage of completion, the cost to cost method is used to measure progress to completion. Revenue from certain OpenWay network software and services arrangements is recognized using the units-of-delivery method of contract accounting, as network design services and network software are essential to the functionality of the related hardware (network). This methodology results in the deferral of costs and revenues as professional services and software implementation commence prior to deployment of hardware. In the unusual instances when we are unable to reliably estimate the cost to complete a contract at its inception, we use the completed contract method of contract accounting. Revenues and costs are recognized upon substantial completion when remaining costs are insignificant and potential risks are minimal. Change orders and contract modifications entered into after inception of the original contract are analyzed to determine if change orders or modifications are extensions of an existing agreement or are accounted for as a separate arrangement for purposes of applying contract accounting. If we estimate that the completion of a contract component (unit of accounting) will result in a loss, the loss is recognized in the period in which the loss becomes evident. We reevaluate the estimated loss through the completion of the contract component and adjust the estimated loss for changes in facts and circumstances. Many of our customer arrangements contain clauses for liquidated damages, related to the timing of delivery or milestone accomplishments, which could become material in an event of failure to meet the contractual deadlines. At the inception of the arrangement and on an ongoing basis, we evaluate if the liquidated damages represent contingent revenue and, if so, we reduce the amount of consideration allocated to the delivered products and services and recognize it as a reduction in revenue in the period of default. If the arrangement is subject to contract accounting, liquidated damages resulting from anticipated events of default are estimated and are accounted for as a reduction of revenue in the period in which the liquidated damages are deemed probable of occurrence and are reasonably estimable. Our software customers often purchase a combination of software, service, and post contract customer support. For these types of arrangement, revenue recognition is dependent upon the availability of vendor specific objective evidence (VSOE) of fair value for any undelivered element. We determine VSOE by reference to the range of comparable standalone sales or stated renewals. We review these standalone sales or renewals on at least an annual basis. If VSOE is established for all undelivered elements in the contract, revenue is recognized for delivered elements when all other revenue recognition criteria are met. Arrangements in which VSOE for all undelivered elements is not established, we recognize revenue under the combined services approach where revenue for software and software related elements is deferred until all software products have been delivered, all software related services have commenced, and undelivered services do not include significant production, customization or modification. Revenue would be recognized over the longest period that services would be provided. Cloud services and software as a service (“SaaS”) arrangements where customers have access to certain of our software within a cloud-based IT environment that we manage, host and support are offered to customers on a subscription basis. Revenue for the cloud services and SaaS offerings are generally recognized ratably over the contact term commencing with the date the services is made available to customers and all other revenue recognition criteria have been satisfied. For arrangements where cloud services and SaaS is provided on a per meter basis, revenue is recognized based on actual meters read during the period. Certain of our revenue arrangements include an extended or noncustomary warranty provision that covers all or a portion of a customer's replacement or repair costs beyond the standard or customary warranty period. Whether or not the extended warranty is separately priced in the arrangement, a portion of the arrangement's total consideration is allocated to this extended warranty deliverable. This revenue is deferred and recognized over the extended warranty coverage period. Extended or noncustomary warranties do not represent a significant portion of our revenue. We allocate consideration to each deliverable in an arrangement based on its relative selling price. We determine selling price using VSOE, if it exists, otherwise we use third-party evidence (TPE). We define VSOE as a median price of recent standalone transactions that are priced within a narrow range. TPE is determined based on the prices charged by our competitors for a similar deliverable when sold separately. If neither VSOE nor TPE of selling price exists for a unit of accounting, we use estimated selling price (ESP) to determine the price at which we would transact if the product or service were regularly sold by us on a standalone basis. Our determination of ESP involves a weighting of several factors based on the specific facts and circumstances of the arrangement. The factors considered include, historical sales, the cost to produce the deliverable, the anticipated margin on that deliverable, our ongoing pricing strategy and policies, and the characteristics of the varying markets in which the deliverable is sold. We analyze the selling prices used in our allocation of arrangement consideration on an annual basis. Selling prices are analyzed on a more frequent basis if a significant change in our business necessitates a more timely analysis or if we experience significant variances in our selling prices. Unearned revenue is recognized when a customer pays for products or services, but the criteria for revenue recognition have not been met as of the balance sheet date. Unearned revenue of $114.3 million and $139.5 million at December 31, 2016 and 2015 related primarily to professional services and software associated with our smart metering contracts, extended or noncustomary warranty, and prepaid post-contract support. Deferred costs are recognized for products or services for which ownership (typically defined as title and risk of loss) has transferred to the customer, but the criteria for revenue recognition have not been met as of the balance sheet date. Deferred costs were $34.4 million and $56.6 million at December 31, 2016 and 2015 and are recognized within other assets in the Consolidated Balance Sheets. Hardware and software post-sale maintenance support fees are recognized ratably over the life of the related service contract. Shipping and handling costs and incidental expenses billed to customers are recognized as revenue, with the associated cost charged to cost of revenues. We recognize sales, use, and value added taxes billed to our customers on a net basis.
Product and Software Development Costs [Policy Text Block]	Product and Software Development Costs Product and software development costs primarily include employee compensation and third party contracting fees. We do not capitalize product development costs, and we do not generally capitalize software development expenses as the costs incurred are immaterial for the relatively short period of time between technological feasibility and the completion of software development.
Stock-based Compensation [Policy Text Block]	Stock-Based Compensation We grant various stock-based compensation awards to our officers, employees and Board of Directors with service, market, and/or performance vesting conditions. We also grant phantom stock units, which are settled in cash upon vesting and accounted for as liability-based awards. We measure and recognize compensation expense for all stock-based compensation based on estimated fair values. The fair value of stock options is estimated at the date of grant using the Black-Scholes option-pricing model, which includes assumptions for the dividend yield, expected volatility, risk-free interest rate, and expected term. For unrestricted stock awards with no market conditions, the fair value is the market close price of our common stock on the date of grant. For restricted stock units with market conditions, the fair value is estimated at the date of award using a Monte Carlo simulation model, which includes assumptions for dividend yield and expected volatility for our common stock and the common stock for companies within the Russell 3000 index, as well as the risk-free interest rate and expected term of the awards. For phantom stock units, fair value is the market close price of our common stock at the end of each reporting period. We expense stock-based compensation at the date of grant for unrestricted stock awards. For awards with only a service condition, we expense stock-based compensation, adjusted for estimated forfeitures, using the straight-line method over the requisite service period for the entire award. For awards with performance and service conditions, if vesting is probable, we expense the stock-based compensation, adjusted for estimated forfeitures, on a straight-line basis over the requisite service period for each separately vesting portion of the award. For awards with a market condition, we expense the fair value over the requisite service period. Excess tax benefits are credited to common stock when the deduction reduces cash taxes payable. When we have tax deductions in excess of the compensation cost, they are classified as financing cash inflows in the Consolidated Statements of Cash Flows. Certain of our employees are eligible to participate in our Employee Stock Purchase Plan (ESPP). The discount provided for ESPP purchases is 5% from the fair market value of the stock at the end of each fiscal quarter and is not considered compensatory.
Income Tax, Policy [Policy Text Block]	Income Taxes We account for income taxes using the asset and liability method of accounting. Deferred tax assets and liabilities are recognized based upon anticipated future tax consequences, in each of the jurisdictions that we operate, attributable to: (1) the differences between the financial statement carrying amounts of existing assets and liabilities and their respective income tax bases; and (2) net operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured annually using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The calculation of our tax liabilities involves applying complex tax regulations in different tax jurisdictions to our tax positions. The effect on deferred tax assets and liabilities of a change in tax legislation and/or rates is recognized in the period that includes the enactment date. A valuation allowance is recognized to reduce the carrying amounts of deferred tax assets if it is not more likely than not that such assets will be realized. We do not recognize tax liabilities on undistributed earnings of international subsidiaries that are permanently reinvested.
Foreign Exchange [Policy Text Block]	Foreign Exchange Our consolidated financial statements are reported in U.S. dollars. Assets and liabilities of international subsidiaries with non-U.S. dollar functional currencies are translated to U.S. dollars at the exchange rates in effect on the balance sheet date, or the last business day of the period, if applicable. Revenues and expenses for each subsidiary are translated to U.S. dollars using a weighted average rate for the relevant reporting period. Translation adjustments resulting from this process are included, net of tax, in OCI. Gains and losses that arise from exchange rate fluctuations for monetary asset and liability balances that are not denominated in an entity’s functional currency are included within other income (expense), net in the Consolidated Statements of Operations. Currency gains and losses of intercompany balances deemed to be long-term in nature or designated as a hedge of the net investment in international subsidiaries are included, net of tax, in OCI. Foreign currency losses, net of hedging, of $0.3 million, $3.0 million, and $5.1 million were included in other expenses, net, for the years ended December 31, 2016, 2015 and 2014, respectively.
Fair Value Measurement [Policy Text Block]	Fair Value Measurements For assets and liabilities measured at fair value, the GAAP fair value hierarchy prioritizes the inputs used in different valuation methodologies, assigning the highest priority to unadjusted quoted prices for identical assets and liabilities in actively traded markets (Level 1) and the lowest priority to unobservable inputs (Level 3). Level 2 inputs consist of quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in non-active markets; and model-derived valuations in which significant inputs are corroborated by observable market data either directly or indirectly through correlation or other means. Inputs may include yield curves, volatility, credit risks, and default rates.
Use of Estimates [Policy Text Block]	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Examples of significant estimates include revenue recognition, warranty, restructuring, income taxes, goodwill and intangible assets, defined benefit pension plans, contingencies, and stock-based compensation. Due to various factors affecting future costs and operations, actual results could differ materially from these estimates.
New Accounting Pronouncements [Text Block]	New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers: Topic 606 (ASU 2014-09), to supersede nearly all existing revenue recognition guidance under U.S. GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, which deferred the effective date for implementation of ASU 2014-09 by one year and is now effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted but not earlier than the original effective date. In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net) (ASU 2016-08), which clarifies the implementation guidance of principal versus agent considerations. In April 2016, the FASB issued ASU 2016-10, Identifying Performance Obligations and Licensing (ASU 2016-10), which clarifies the identification of performance obligations and licensing implementation guidance. In May 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients (ASU 2016-12), to improve guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition. The effective date and transition requirements in ASU 2016-08, ASU 2016-10, and ASU 2016-12 are the same as the effective date and transition requirements of ASU 2015-14. The revenue guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the cumulative catch-up transition method). We currently anticipate adopting the standard effectively January 1, 2018 using the cumulative catch-up transition method, and therefore, will recognize the cumulative effect of initially applying the revenue standard as an adjustment to the opening balance of retained earnings in the period of initial application. We currently believe the most significant impact relates to our accounting for software license revenue, but are continuing to evaluate the effect that the updated standard will have on our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In April 2015, the FASB issued ASU 2015-03, Interest - Imputation of Interest (ASU 2015-03). ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of the corresponding debt liability. In August 2015, the FASB issued ASU 2015-15, Interest - Imputation of Interest: Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements (ASU 2015-15). ASU 2015-15 provides additional guidance on the presentation and subsequent measurement of debt issuance costs associated with line-of-credit arrangements. ASU 2015-03 and ASU 2015-15 are effective for interim and annual periods beginning after December 15, 2015, with early adoption permitted, and is to be applied on a retrospective basis. We adopted this standard on January 1, 2016, and it did not materially impact our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In April 2015, the FASB issued ASU 2015-05, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Fees Paid in a Cloud Computing Arrangement (ASU 2015-05), which provides guidance about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. ASU 2015-05 is effective for us on January 1, 2016. We adopted this standard on January 1, 2016, and it did not materially impact our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330) - Simplifying the Measurement of Inventory (ASU 2015-11). The amendments in ASU 2015-11 apply to inventory measured using first-in, first-out (FIFO) or average cost and will require entities to measure inventory at the lower of cost and net realizable value. Net realizable value is the ESP in the normal course of business, minus the cost of completion, disposal and transportation. Replacement cost and net realizable value less a normal profit margin will no longer be considered. We adopted this standard on January 1, 2017 and it did not materially impact our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires substantially all leases be recognized by lessees on their balance sheet as a right-of-use asset and corresponding lease liability, including leases currently accounted for as operating leases. The new standard also will result in enhanced quantitative and qualitative disclosures, including significant judgments made by management, to provide greater insight into the extent of revenue and expense recognized and expected to be recognized from existing leases. The standard requires modified retrospective adoption and will be effective for annual reporting periods beginning after December 15, 2018, with early adoption permitted. We are currently assessing the impact of adoption on our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (Topic 718) (ASU 2016-09), which simplifies several areas within Topic 718. These include the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The amendment in this ASU becomes effective on a modified retrospective basis for accounting in tax benefits recognized, retrospectively for accounting related to the presentation of employee taxes paid, prospectively for accounting related to recognition of excess tax benefits, and either prospectively or retrospectively for accounting related to presentation of excess employee tax benefits for annual periods, and interim periods within those annual periods, beginning after December 15, 2016. We adopted this standard effective January 1, 2017 and the most significant impact relates to the recognition of excess tax benefits which resulted in an approximately $15 million one-time adjustment to retained earnings and deferred tax assets related to cumulative excess tax benefits previously unrecognized. This amendment was adopted on a prospective basis, which does not require the restatement of prior years. In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business (ASU 2017-01), which narrows the definition of a business and provides a framework that gives entities a basis for making reasonable judgments about whether a transaction involves an asset or a business. ASU 2017-01 states that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or group of similar identifiable assets, the set is not a business. If this initial test is not met, a set cannot be considered a business unless it includes an input and a substantive process that together significantly contribute to the ability to create output. ASU 2017-01 is effective for fiscal years beginning after December 15, 2019 with early adoption permitted. We adopted this standard on January 1, 2017 and it will not materially impact our consolidated results of operations, financial position, cash flows, and related financial statement disclosures. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment (ASU 2017-04), which simplifies the measurement of goodwill impairment by removing step two of the goodwill impairment test that requires the determination of the fair value of individual assets and liabilities of a reporting unit. ASU 2017-04 requires goodwill impairment to be measured as the amount by which a reporting unit’s carrying value exceeds its fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 is effective for fiscal years beginning after December 15, 2019 with early adoption permitted for interim or annual goodwill impairment tests performed after January 1, 2017. We are currently assessing the impact of adoption on our consolidated results of operations, financial position, cash flows, and related financial statement disclosures.

Earnings Per Share Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share [Table Text Block]

The following table sets forth the computation of basic and diluted earnings (loss) per share (EPS):



	Year Ended December 31,
	2016		2015		2014
	(in thousands, except per share data)
Net income (loss) available to common shareholders	$	31,770	$	12,678	$	(23,670	)

Weighted average common shares outstanding - Basic	38,207		38,224		39,184
Dilutive effect of stock-based awards	436		282		—
Weighted average common shares outstanding - Diluted	38,643		38,506		39,184
Earnings (loss) per common share - Basic	$	0.83	$	0.33	$	(0.60	)
Earnings (loss) per common share - Diluted	$	0.82	$	0.33	$	(0.60	)

Certain Balance Sheet Components Certain Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2016

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net [Table Text Block]



Accounts receivable, net	December 31, 2016		December 31, 2015
	(in thousands)
Trade receivables (net of allowance of $3,320 and $5,949)	$	299,870	$	298,550
Unbilled receivables	51,636		32,345
Total accounts receivable, net	$	351,506	$	330,895

Allowance for Credit Losses on Financing Receivables [Table Text Block]



Allowance for doubtful account activity	Year Ended December 31,
	2016			2015
	(in thousands)
Beginning balance	$	5,949		$	6,195
Provision for doubtful accounts, net	60			1,025
Accounts written-off	(2,422		)	(549		)
Effects of change in exchange rates	(267		)	(722		)
Ending balance	$	3,320		$	5,949

Inventories [Table Text Block]



Inventories	December 31, 2016		December 31, 2015
	(in thousands)
Materials	$	103,274	$	111,191
Work in process	7,925		9,400
Finished goods	51,850		69,874
Total inventories	$	163,049	$	190,465

Property, Plant, and Equipment [Table Text Block]



Property, plant, and equipment, net	December 31, 2016			December 31, 2015
	(in thousands)
Machinery and equipment	$	279,746		$	289,015
Computers and software	98,125			104,310
Buildings, furniture, and improvements	122,680			127,531
Land	17,179			19,882
Construction in progress, including purchased equipment	29,358			32,639
Total cost	547,088			573,377
Accumulated depreciation	(370,630		)	(383,121		)
Property, plant, and equipment, net	$	176,458		$	190,256

Depreciation Expense [Table Text Block]



Depreciation expense	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Depreciation expense	$	43,206	$	44,320	$	54,435

Intangible Assets Schedule of Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Schedule of Intangible Assets [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The gross carrying amount and accumulated amortization of our intangible assets, other than goodwill, are as follows:



	December 31, 2016							December 31, 2015
	Gross Assets		Accumulated Amortization			Net		Gross Assets		Accumulated Amortization			Net
	(in thousands)
Core-developed technology	$	372,568	$	(354,878	)	$	17,690	$	388,981	$	(358,092	)	$	30,889
Customer contracts and relationships	224,467		(170,056		)	54,411		238,379		(168,885		)	69,494
Trademarks and trade names	61,785		(61,766		)	19		64,069		(62,571		)	1,498
Other	11,076		(11,045		)	31		11,078		(11,027		)	51
Total intangible assets	$	669,896	$	(597,745	)	$	72,151	$	702,507	$	(600,575	)	$	101,932

SummaryOfIntangibleAssetAccountActivity [Table Text Block]

A summary of the intangible asset account activity is as follows:



	Year Ended December 31,
	2016			2015
	(in thousands)
Beginning balance, intangible assets, gross	$	702,507		$	748,148
Intangible assets acquired	—			4,827
Intangible assets impaired	—			(497		)
Effect of change in exchange rates	(32,611		)	(49,971		)
Ending balance, intangible assets, gross	$	669,896		$	702,507

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

A summary of intangible asset amortization expense is as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Amortization expense	$	25,112	$	31,673	$	43,619

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Estimated future annual amortization expense is as follows:



Year Ending December 31,	Estimated Annual Amortization
	(in thousands)
2017	$	17,914
2018	12,383
2019	9,695
2020	7,866
2021	6,845
Beyond 2021	17,448
Total intangible assets subject to amortization	$	72,151

Goodwill Schedule of Goodwill Allocated to Reporting Segments (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill [Line Items]

Schedule of Goodwill [Table Text Block]

The following table reflects goodwill allocated to each reporting segment at December 31, 2016 and 2015:



	Electricity			Gas			Water			Total Company
	(in thousands)
Goodwill balance at January 1, 2015
Goodwill before impairment	$	449,668		$	359,485		$	382,655		$	1,191,808
Accumulated impairment losses	(393,981		)	—			(297,007		)	(690,988		)
Goodwill, net	55,687			359,485			85,648			500,820

Goodwill acquired	—			—			4,684			4,684
Effect of change in exchange rates	(2,954		)	(28,049		)	(6,379		)	(37,382		)

Goodwill balance at December 31, 2015
Goodwill before impairment	414,910			331,436			350,314			1,096,660
Accumulated impairment losses	(362,177		)	—			(266,361		)	(628,538		)
Goodwill, net	52,733			331,436			83,953			468,122

Effect of change in exchange rates	(1,360		)	(11,523		)	(2,745		)	(15,628		)

Goodwill balance at December 31, 2016
Goodwill before impairment	400,299			319,913			334,505			1,054,717
Accumulated impairment losses	(348,926		)	—			(253,297		)	(602,223		)
Goodwill, net	$	51,373		$	319,913		$	81,208		$	452,494

Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Schedule of Debt [Table Text Block]

The components of our borrowings are as follows:



	December 31, 2016		December 31, 2015
	(in thousands)
Credit Facilities
USD denominated term loan	$	208,125	$	219,375
Multicurrency revolving line of credit	97,167		151,837
Total debt	305,292		371,212
Less: current portion of debt	14,063		11,250
Less: unamortized prepaid debt fees - term loan	769		1,047
Long-term debt	$	290,460	$	358,915

Schedule of Maturities of Long-term Debt [Table Text Block]

Required minimum principal payments on our outstanding credit facilities are as follows:



Year Ending December 31,	Minimum Payments
	(in thousands)
2017	$	14,063
2018	19,687
2019	22,500
2020	249,042
2021	—
Total minimum payments on debt	$	305,292

Schedule of Long-Term Debt Repayments [Table Text Block]

Total credit facility repayments were as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Term loan	$	11,250	$	13,125	$	26,250
Multicurrency revolving line of credit	67,869		49,873		76,188
Total credit facility repayments	$	79,119	$	62,998	$	102,438

Derivative Financial Instruments Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The fair values of our derivative instruments are as follows:



		Fair Value
	Balance Sheet Location	December 31, 2016		December 31, 2015
		(in thousands)
Asset Derivatives
Derivatives designated as hedging instruments under ASC 815-20
Interest rate cap contracts	Other current assets	$	3	$	—
Interest rate swap contracts	Other long-term assets	1,830		1,632
Interest rate cap contracts	Other long-term assets	376		1,423
Derivatives not designated as hedging instruments under ASC 815-20
Foreign exchange forward contracts	Other current assets	169		27
Interest rate cap contracts	Other current assets	4		—
Interest rate cap contracts	Other long-term assets	563		—
Total asset derivatives		$	2,945	$	3,082

Liability Derivatives
Derivatives designated as hedging instruments under ASC 815-20
Interest rate swap contracts	Other current liabilities	$	934	$	868
Derivatives not designated as hedging instruments under ASC 815-20
Foreign exchange forward contracts	Other current liabilities	449		99
Total liability derivatives		$	1,383	$	967

Accumulated OCI for Derivative and Nonderivative Instruments Designated as Hedging Instruments, Net of Tax [Table Text Block]

OCI during the reporting period for our derivative and nonderivative instruments designated as hedging instruments, net of tax, was as follows:



	2016			2015			2014
	(in thousands)
Net unrealized gain (loss) on hedging instruments at January 1,	$	(14,062	)	$	(15,148	)	$	(15,636	)
Unrealized gain (loss) on derivative instruments	(1,087		)	76			(566		)
Realized (gains) losses reclassified into net income (loss)	812			1,010			1,054
Net unrealized gain (loss) on hedging instruments at December 31,	$	(14,337	)	$	(14,062	)	$	(15,148	)

Offsetting Assets [Table Text Block]



Offsetting of Derivative Assets
			Gross Amounts Not Offset in the Consolidated Balance Sheets
	Gross Amounts of Recognized Assets Presented in the Consolidated Balance Sheets		Derivative Financial Instruments			Cash Collateral Received		Net Amount
	(in thousands)
December 31, 2016	$	2,945	$	(1,322	)	$	—	$	1,623

December 31, 2015	$	3,082	$	(565	)	$	—	$	2,517

Offsetting Liabilities [Table Text Block]



Offsetting of Derivative Liabilities
			Gross Amounts Not Offset in the Consolidated Balance Sheets
	Gross Amounts of Recognized Liabilities Presented in the Consolidated Balance Sheets		Derivative Financial Instruments			Cash Collateral Pledged		Net Amount
	(in thousands)
December 31, 2016	$	1,383	$	(1,322	)	$	—	$	61

December 31, 2015	$	967	$	(565	)	$	—	$	402

Derivative Instruments, Gain (Loss) [Table Text Block]

The before-tax effects of our cash flow derivative hedging instruments on the Consolidated Balance Sheets and the Consolidated Statements of Operations for the years ended December 31 are as follows:



Derivatives in ASC 815 Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)									Loss Reclassified from AOCI into Income (Effective Portion)										Loss Recognized in Income on Derivative (Ineffective Portion)
Derivatives in ASC 815 Cash Flow Hedging Relationships										Location	Amount									Location	Amount
	2016			2015			2014				2016			2015			2014				2016			2015		2014
	(in thousands)										(in thousands)										(in thousands)
Interest rate swap contracts	$	(1,163	)	$	367		$	(915	)	Interest expense	$	(1,296	)	$	(1,639	)	$	(1,704	)	Interest expense	$	—		$	—	$	—
Interest rate cap contracts	$	(605	)	$	(244	)	$	—		Interest expense	$	(27	)	$	—		$	—		Interest expense	$	(1	)	$	—	$	—

Foreign Exchange Derivatives Not Designated As Hedging Instruments [Table Text Block]

The before-tax effects of our derivatives not designated as hedging instruments on the Consolidated Statements of Operations for the years ended December 31 are as follows:



Derivatives Not Designated as Hedging Instrument under ASC 815	Location	Gain (Loss) Recognized in Income on Derivative
		2016		2015			2014
		(in thousands)
Foreign exchange forward contracts	Other income (expense), net	$	537	$	(3,145	)	$	(5,248	)
Interest rate cap contracts	Interest expense	$	129	$	—		$	—

Defined Benefit Pension Plans Defined Benefit Pension Plans (Tables)

12 Months Ended

Dec. 31, 2016

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of Changes in Benefit Obligation and Fair Value of Plan Assets [Table Text Block]

The following tables set forth the components of the changes in benefit obligations and fair value of plan assets:



	Year Ended December 31,
	2016			2015
	(in thousands)
Change in benefit obligation:
Benefit obligation at January 1,	$	98,767		$	116,178
Service cost	3,472			4,572
Interest cost	2,573			2,380
Actuarial (gain) loss	7,733			(5,211		)
Benefits paid	(9,481		)	(4,382		)
Foreign currency exchange rate changes	(4,386		)	(12,190		)
Curtailment	14			(1,683		)
Settlement	(1,431		)	—
Other	—			(897		)
Benefit obligation at December 31,	$	97,261		$	98,767

Change in plan assets:
Fair value of plan assets at January 1,	$	9,662		$	10,761
Actual return on plan assets	604			159
Company contributions	348			671
Benefits paid	(370		)	(308		)
Foreign currency exchange rate changes	(29		)	(1,621		)
Fair value of plan assets at December 31,	10,215			9,662
Net pension benefit obligation at fair value	$	87,046		$	89,105

Schedule of Amounts Recognized in the Consolidated Balance Sheets [Table Text Block]

Amounts recognized on the Consolidated Balance Sheets consist of:



	At December 31,
	2016		2015
	(in thousands)
Assets
Plan assets in other long-term assets	$	654	$	359

Liabilities
Current portion of pension benefit obligation in wages and benefits payable	3,202		3,493
Long-term portion of pension benefit obligation	84,498		85,971

Pension benefit obligation, net	$	87,046	$	89,105

Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]

Amounts in AOCI (pre-tax) that have not yet been recognized as components of net periodic benefit costs consist of:



	At December 31,
	2016		2015
	(in thousands)
Net actuarial loss	$	26,767	$	24,687
Net prior service cost	619		706
Amount included in AOCI	$	27,386	$	25,393

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

Amounts recognized in OCI (pre-tax) are as follows:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Net actuarial (gain) loss	$	6,316		$	(6,894	)	$	25,838
Settlement/curtailment loss	(1,343		)	(336		)	(55		)
Plan asset (gain) loss	(64		)	343			129
Amortization of net actuarial loss	(1,351		)	(1,979		)	(572		)
Amortization of prior service cost	(58		)	(59		)	(138		)
Other	4			(46		)	68
Other comprehensive (income) loss	$	3,504		$	(8,971	)	$	25,270

Schedule of Net Periodic Pension Benefit Costs [Table Text Block]

Net periodic pension benefit costs for our plans include the following components:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Service cost	$	3,472		$	4,572		$	3,559
Interest cost	2,573			2,380			3,476
Expected return on plan assets	(540		)	(502		)	(619		)
Amortization of prior service costs	58			59			138
Amortization of actuarial net loss	1,351			1,979			572
Settlements and other	1,340			420			55
Net periodic pension benefit costs	$	8,254		$	8,908		$	7,181

Schedule of Assumptions Used [Table Text Block]

The significant actuarial weighted average assumptions used in determining the benefit obligations and net periodic benefit cost for our benefit plans are as follows:



	At and For The Year Ended December 31,
	2016		2015		2014
Actuarial assumptions used to determine benefit obligations at end of period:
Discount rate	2.18	%	2.59	%	2.36	%
Expected annual rate of compensation increase	3.65	%	3.60	%	3.37	%
Actuarial assumptions used to determine net periodic benefit cost for the period:
Discount rate	2.59	%	2.36	%	3.76	%
Expected rate of return on plan assets	5.29	%	5.45	%	5.40	%
Expected annual rate of compensation increase	3.60	%	3.37	%	3.33	%

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

The total obligations and fair value of plan assets for plans with projected benefit obligations and accumulated benefit obligations exceeding the fair value of plan assets are as follows:



	At December 31,
	2016		2015
	(in thousands)
Projected benefit obligation	$	94,110	$	95,814
Accumulated benefit obligation	84,448		86,534
Fair value of plan assets	6,410		6,502

Fair values of the assets held by the postretirement benefits plans by asset category [Table Text Block]

The fair values of our plan investments by asset category are as follows:



	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Unobservable Inputs (Level 3)
	(in thousands)
	December 31, 2016
Cash	$	783	$	783	$	—
Insurance funds	7,011		—		7,011
Other securities	2,421		—		2,421
Total fair value of plan assets	$	10,215	$	783	$	9,432

	December 31, 2015
Cash	$	795	$	795	$	—
Insurance funds	7,089		—		7,089
Other securities	1,778		—		1,778
Total fair value of plan assets	$	9,662	$	795	$	8,867

Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]

The following tables present a reconciliation of Level 3 assets held during the years ended December 31, 2016 and 2015.



	Balance at January 1, 2016		Net Realized and Unrealized Gains		Net Purchases, Issuances, Settlements, and Other			Net Transfers Into Level 3		Effect of Foreign Currency			Balance at December 31, 2016
	(in thousands)
Insurance funds	$	7,089	$	235	$	54		$	—	$	(367	)	$	7,011
Other securities	1,778		405		(84		)	—		322			2,421
Total	$	8,867	$	640	$	(30	)	$	—	$	(45	)	$	9,432



	Balance at January 1, 2015		Net Realized and Unrealized Gains		Net Purchases, Issuances, Settlements, and Other			Net Transfers Into Level 3		Effect of Foreign Currency			Balance at December 31, 2015
	(in thousands)
Insurance funds	$	7,440	$	49	$	372		$	—	$	(772	)	$	7,089
Other securities	2,595		44		(82		)	—		(779		)	1,778
Total	$	10,035	$	93	$	290		$	—	$	(1,551	)	$	8,867

Schedule of Expected Benefit Payments [Table Text Block]



Year Ending December 31,	Estimated Annual Benefit Payments
Year Ending December 31,	Estimated Annual Benefit Payments
	(in thousands)
2017	$	3,655
2018	2,662
2019	2,737
2020	3,285
2021	3,918
2022-2026	22,929

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

Share-based Compensation [Abstract]

Stock-Based Compensation Expense and Related Tax Benefit [Table Text Block]

For the years ended December 31, stock-based compensation expense and the related tax benefit were as follows:



	2016		2015		2014
	(in thousands)
Stock options	$	2,357	$	2,648	$	2,333
Restricted stock units	14,723		10,735		14,591
Unrestricted stock awards	955		706		936
Phantom stock units	1,077		—		—
Total stock-based compensation	$	19,112	$	14,089	$	17,860

Related tax benefit	$	4,927	$	4,228	$	4,994

Stock Options, Valuation Assumptions [Table Text Block]

The fair values of stock options granted were estimated at the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions:



	Year Ended December 31,
	2016		2015		2014
Dividend yield	—		—		—
Expected volatility	33.5	%	34.3	%	39.3	%
Risk-free interest rate	1.3	%	1.7	%	1.7	%
Expected term (years)	5.5		5.5		5.5

Employee Stock Options Activity [Table Text Block]

A summary of our stock option activity for the years ended December 31 is as follows:



	Shares		Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value⁽¹⁾		Weighted Average Grant Date Fair Value
	(in thousands)				(years)	(in thousands)
Outstanding, January 1, 2014	1,180		$	54.79	4.6	$	1,300
Granted	160		35.65					$	13.65
Exercised	(67	)	28.03			826
Forfeited	(7	)	44.06
Expired	(143	)	68.97
Outstanding, December 31, 2014	1,123		$	51.90	4.4	$	1,676

Granted	291		$	35.25				$	12.09
Exercised	(24	)	36.05			$	26
Forfeited	(17	)	37.47
Expired	(193	)	52.17
Outstanding, December 31, 2015	1,180		$	48.31	5.7	$	405

Granted	191		$	40.40				$	13.27
Exercised	(58	)	37.00			$	742
Forfeited	(36	)	35.29
Expired	(318	)	55.13
Outstanding, December 31, 2016	959		$	45.64	6.6	$	19,125

Exercisable, December 31, 2016	562		$	51.18	5.1	$	9,181

Expected to vest, December 31, 2016	385		$	37.76	8.7	$	9,658

⁽¹⁾

Schedule of Share-based Payment Award, Restricted Stock Units, Valuation Assumptions [Table Text Block]

The weighted-average assumptions used to estimate the fair value of performance-based restricted stock units granted and the resulting weighted average fair-value are as follows:



	Year Ended December 31,
	2016			2015			2014
Dividend yield	—			—			—
Expected volatility	30.0		%	30.1		%	32.3		%
Risk-free interest rate	0.7		%	0.7		%	0.4		%
Expected term (years)	1.8			2.1			2.0

Weighted-average grant date fair value	$	44.92		$	33.48		$	35.15

Restricted Stock Units Award Activity [Table Text Block]

The following table summarizes restricted stock unit activity for the years ended December 31:



	Number of Restricted Stock Units		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value⁽¹⁾
	(in thousands)				(in thousands)
Outstanding, January 1, 2014	658
Granted⁽²⁾	350		$	35.74
Released	(291	)			$	14,402
Forfeited	(35	)
Outstanding, December 31, 2014	682

Granted⁽³⁾	434		$	35.09
Released	(296	)			$	12,204
Forfeited	(64	)
Outstanding, December 31, 2015	756

Granted⁽⁴⁾	306		$	41.58
Released	(312	)			$	11,944
Forfeited	(82	)
Outstanding, December 31, 2016	668

Vested but not released, December 31, 2016	115				$	7,242

Expected to vest, December 31, 2016	477				$	30,006


⁽¹⁾	The aggregate intrinsic value is the market value of the stock, before applicable income taxes, based on the closing price on the stock release dates or at the end of the period for restricted stock units expected to vest.


⁽²⁾	Restricted stock units include 14,433 shares for the 2-year award under the 2013 Performance Award Agreement, which are eligible for distribution at December 31, 2014.


⁽³⁾	Restricted stock units include 15,648 shares for the 3-year award under the 2013 Performance Award Agreement, which are eligible for distribution at December 31, 2015.


⁽⁴⁾	Restricted stock units include 110,259 shares for the 3-year award under the 2014 Performance Award Agreement, which are eligible for distribution at December 31, 2016.

Unrestricted Stock Awards Activity [Table Text Block]

The following table summarizes unrestricted stock award activity for the years ended December 31:



	2016		2015		2014
	(in thousands, except per share data)
Shares of unrestricted stock granted	21		20		24

Weighted average grant date fair value per share	$	44.94	$	35.01	$	39.06

Schedule of Other Share-based Compensation, Activity [Table Text Block]

The following table summarizes phantom stock unit activity:



	Number of Phantom Stock Units		Weighted Average Grant Date Fair Value
	(in thousands)
Outstanding, January 1, 2016	—
Granted	63		$	40.11
Forfeited	(1	)
Outstanding, December 31, 2016	62

Expected to vest, December 31, 2016	57

Employee Stock Purchase Plan (ESPP) Activity [Table Text Block]

The following table summarizes ESPP activity for the years ended December 31:



	2016	2015	2014
	(in thousands)
Shares of stock sold to employees⁽¹⁾	20	54	61


⁽¹⁾	Stock sold to employees during each fiscal quarter under the ESPP is associated with the offering period ending on the last day of the previous fiscal quarter.

Defined Contribution, Bonus, and Profit Sharing (Tables)

12 Months Ended

Dec. 31, 2016

Defined Contribution, Bonus, and Profit Sharing [Abstract]

Schedule of Costs of Retirement Plans [Table Text Block]

The expense for our defined contribution plans was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Defined contribution plans expense	$	7,941	$	6,579	$	7,097

Schedule of Bonus and Profit Sharing Expenses [Table Text Block]

Bonus and profit sharing plans and award expense was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Bonus and profit sharing plans and award expense	$	43,377	$	14,192	$	34,989

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Taxes [Abstract]

Income Tax Provision [Table Text Block]

The following table summarizes the provision (benefit) for U.S. federal, state, and foreign taxes on income from continuing operations:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Current:
Federal	$	20,490		$	5,033		$	17,749
State and local	2,708			1,633			775
Foreign	12,586			13,945			20,269
Total current	35,784			20,611			38,793

Deferred:
Federal	10,805			3,951			(82,186		)
State and local	1,160			(972		)	(979		)
Foreign	(24,815		)	(41,893		)	(51,646		)
Total deferred	(12,850		)	(38,914		)	(134,811		)

Change in valuation allowance	26,640			40,402			100,053
Total provision for income taxes	$	49,574		$	22,099		$	4,035

Income Tax Rate Reconciliation [Table Text Block]

A reconciliation of income taxes at the U.S. federal statutory rate of 35% to the consolidated actual tax rate is as follows:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Income (loss) before income taxes
Domestic	$	196,750		$	115,526		$	86,605
Foreign	(112,123		)	(78,424		)	(104,870		)
Total income (loss) before income taxes	$	84,627		$	37,102		$	(18,265	)

Expected federal income tax provision (benefit)	$	29,619		$	12,986		$	(6,393	)
Goodwill impairment	—			—			119
Change in valuation allowance	26,640			40,402			100,053
Stock-based compensation	2,762			939			1,255
Foreign earnings	(12,584		)	(33,364		)	(31,544		)
Tax credits	(7,471		)	(5,257		)	(91,148		)
Uncertain tax positions, including interest and penalties	3,817			4,274			1,519
Change in tax rates	67			312			(20		)
State income tax provision (benefit), net of federal effect	2,806			(14		)	(1,235		)
U.S. tax provision on foreign earnings	997			203			31,309
Domestic production activities deduction	(2,424		)	(1,100		)	(2,312		)
Local foreign taxes	2,914			1,450			2,295
Other, net	2,431			1,268			137
Total provision for income taxes	$	49,574		$	22,099		$	4,035

Deferred Tax Assets and Liabilities [Table Text Block]

Deferred tax assets and liabilities consist of the following:



	At December 31,
	2016			2015
	(in thousands)
Deferred tax assets
Loss carryforwards⁽¹⁾	$	194,381		$	190,545
Tax credits⁽²⁾	53,323			52,131
Accrued expenses	36,336			33,546
Pension plan benefits expense	16,822			16,232
Warranty reserves	21,306			25,129
Depreciation and amortization	15,698			21,499
Equity compensation	6,924			9,303
Inventory valuation	3,086			4,068
Deferred revenue	4,896			9,097
Tax effect of accumulated translation	—			291
Other deferred tax assets, net	13,621			11,770
Total deferred tax assets	366,393			373,611
Valuation allowance	(249,560		)	(235,339		)
Total deferred tax assets, net of valuation allowance	116,833			138,272

Deferred tax liabilities
Depreciation and amortization	(19,995		)	(27,000		)
Tax effect of accumulated translation	(100		)	—
Other deferred tax liabilities, net	(5,698		)	(3,608		)
Total deferred tax liabilities	(25,793		)	(30,608		)
Net deferred tax assets	$	91,040		$	107,664

⁽¹⁾

⁽²⁾

Unrecognized Tax Benefits Related To Uncertain Tax Positions [Table Text Block]

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:



	(in thousands)
Unrecognized tax benefits at January 1, 2014	$	28,615
Gross increase to positions in prior years	2,749
Gross decrease to positions in prior years	(1,641		)
Gross increases to current period tax positions	3,008
Audit settlements	—
Decrease related to lapsing of statute of limitations	(1,715		)
Effect of change in exchange rates	(2,870		)
Unrecognized tax benefits at December 31, 2014	$	28,146

Gross increase to positions in prior years	6,461
Gross decrease to positions in prior years	(2,512		)
Gross increases to current period tax positions	25,741
Audit settlements	—
Decrease related to lapsing of statute of limitations	(908		)
Effect of change in exchange rates	(2,048		)
Unrecognized tax benefits at December 31, 2015	$	54,880

Gross increase to positions in prior years	1,164
Gross decrease to positions in prior years	(612		)
Gross increases to current period tax positions	5,071
Audit settlements	(1,116		)
Decrease related to lapsing of statute of limitations	(860		)
Effect of change in exchange rates	(901		)
Unrecognized tax benefits at December 31, 2016	$	57,626



	At December 31,
	2016		2015		2014
	(in thousands)
The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate	$	56,411	$	53,602	$	26,980



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Net interest and penalties expense	$	193	$	880	$	469



	At December 31,
	2016		2015
	(in thousands)
Accrued interest	$	2,473	$	2,105
Accrued penalties	2,329		2,577



Tax Jurisdiction		Years Subject to Audit
U.S. federal		Subsequent to 1999
France		Subsequent to 2009
Germany		Subsequent to 2010
Brazil		Subsequent to 2010
United Kingdom		Subsequent to 2012
Italy		Subsequent to 2007

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Rent Expense [Table Text Block]

Operating lease rental expense for factories, service and distribution locations, offices, and equipment was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Rental expense	$	14,232	$	15,524	$	19,178

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Future minimum lease payments at December 31, 2016, under noncancelable operating leases with initial or remaining terms in excess of one year are as follows:



Year Ending December 31,	Minimum Payments
	(in thousands)
2017	$	13,128
2018	12,238
2019	9,152
2020	6,026
2021	5,363
Beyond 2021	8,510
Future minimum lease payments	$	54,417

Schedule of Line of Credit Facilities [Table Text Block]

Our available lines of credit, outstanding standby LOCs, and bonds are as follows:



	At December 31,
	2016			2015
	(in thousands)
Credit facilities⁽¹⁾
Multicurrency revolving line of credit	$	500,000		$	500,000
Long-term borrowings	(97,167		)	(151,837		)
Standby LOCs issued and outstanding	(46,103		)	(46,574		)

Net available for additional borrowings under the multi-currency revolving line of credit	$	356,730		$	301,589
Net available for additional standby LOCs under sub-facility⁽²⁾	203,897			253,426

Unsecured multicurrency revolving lines of credit with various financial institutions
Multicurrency revolving line of credit	$	91,809		$	97,989
Standby LOCs issued and outstanding	(21,734		)	(31,122		)
Short-term borrowings⁽³⁾	(69		)	(3,884		)
Net available for additional borrowings and LOCs	$	70,006		$	62,983

Unsecured surety bonds in force	$	48,221		$	87,558


⁽¹⁾	Refer to Note 6 for details regarding our secured credit facilities.


⁽²⁾	During the year ended December 31, 2016, as a result of entering into the first and second amendments to the 2015 credit facility, the maximum limit available for additional standby LOCs under sub-facility was reduced from $300 million to $250 million.


⁽³⁾	Short-term borrowings are included in “Other current liabilities” on the Consolidated Balance Sheets.

Schedule of Warranty Accruals [Table Text Block]

A summary of the warranty accrual account activity is as follows:



	Year Ended December 31,
	2016			2015
	(in thousands)
Beginning balance	$	54,512		$	36,548
New product warranties	7,987			8,380
Other adjustments and expirations	5,933			37,604
Claims activity	(24,364		)	(25,955		)
Effect of change in exchange rates	(766		)	(2,065		)
Ending balance	43,302			54,512
Less: current portion of warranty	24,874			36,927
Long-term warranty	$	18,428		$	17,585

Warranty Expense [Table Text Block]

Warranty expense was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Total warranty expense	$	13,920	$	45,984	$	9,238

Schedule of Changes to Unearned Revenue for Extended Warranty [Table Text Block]

A summary of changes to unearned revenue for extended warranty contracts is as follows:



	Year Ended December 31,
	2016			2015
	(in thousands)
Beginning balance	$	33,654		$	34,138
Unearned revenue for new extended warranties	1,437			2,792
Unearned revenue recognized	(3,594		)	(2,832		)
Effect of change in exchange rates	52			(444		)
Ending balance	31,549			33,654
Less: current portion of unearned revenue for extended warranty	4,226			3,565
Long-term unearned revenue for extended warranty within other long-term obligations	$	27,323		$	30,089

Health Benefit Plan Costs and Incurred But Not Reported Accrual Balance [Table Text Block]

Plan costs were as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Plan costs	$	27,276	$	25,355	$	23,206

IBNR accrual, which is included in wages and benefits payable, was as follows:



	At December 31,
	2016		2015
	(in thousands)
IBNR accrual	$	2,441	$	2,051

Restructuring (Tables)

12 Months Ended

Dec. 31, 2016

Restructuring Project [Line Items]

Schedule of Restructuring Reserve by Type of Cost [Table Text Block]

The following table summarizes the activity within the restructuring related balance sheet accounts for the 2016, 2014 and 2013 Projects during the year ended December 31, 2016:



	Accrued Employee Severance			Asset Impairments & Net Loss on Sale or Disposal			Other Accrued Costs			Total
	(in thousands)
Beginning balance, January 1, 2016	$	26,533		$	—		$	3,048		$	29,581
Costs incurred and charged to expense	39,943			7,188			1,959			49,090
Cash payments	(18,452		)	—			(2,389		)	(20,841		)
Non-cash items	—			(7,188		)	—			(7,188		)
Effect of change in exchange rates	(2,656		)	—			(16		)	(2,672		)
Ending balance, December 31, 2016	$	45,368		$	—		$	2,602		$	47,970

2016 Projects [Member]

Restructuring Project [Line Items]

Restructuring and Related Costs [Table Text Block]



	Total Expected Costs at December 31, 2016		Costs Recognized During the Year Ended December 31, 2016		Remaining Costs to be Recognized at December 31, 2016
	(in thousands)
Employee severance costs	$	44,186	$	39,686	$	4,500
Asset impairments & net loss on sale or disposal	7,219		7,219		—
Other restructuring costs	16,389		889		15,500
Total	$	67,794	$	47,794	$	20,000

Segments:
Electricity	$	10,827	$	8,827	$	2,000
Gas	34,468		23,968		10,500
Water	20,061		13,061		7,000
Corporate unallocated	2,438		1,938		500
Total	$	67,794	$	47,794	$	20,000

2014 Project [Member]

Restructuring Project [Line Items]

Restructuring and Related Costs [Table Text Block]



	Total Expected Costs at December 31, 2016		Costs Recognized in Prior Periods		Costs Recognized During the Year Ended December 31, 2016			Remaining Costs to be Recognized at December 31, 2016
	(in thousands)
Employee severance costs	$	34,630	$	34,373	$	257		$	—
Asset impairments & net loss on sale or disposal	8,849		8,880		(31		)	—
Other restructuring costs	4,999		3,929		1,070			—
Total	$	48,478	$	47,182	$	1,296		$	—

Segments:
Electricity	$	20,610	$	21,743	$	(1,133	)	$	—
Gas	13,631		11,855		1,776			—
Water	1,995		1,940		55			—
Corporate unallocated	12,242		11,644		598			—
Total	$	48,478	$	47,182	$	1,296		$	—

Shareholders' Equity Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2016

Other Comprehensive Income (Loss) [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The changes in the components of AOCI, net of tax, were as follows:



	Foreign Currency Translation Adjustments			Net Unrealized Gain (Loss) on Derivative Instruments			Net Unrealized Gain (Loss) on Nonderivative Instruments			Pension Benefit Obligation Adjustments			Accumulated Other Comprehensive Income (Loss)
	(in thousands)
Balances at January 1, 2014	$	4,217		$	(1,256	)	$	(14,380	)	$	(9,885	)	$	(21,304	)
OCI before reclassifications	(89,297		)	(566		)	—			(25,702		)	(115,565		)
Amounts reclassified from AOCI	—			1,054			—			755			1,809
Total other comprehensive income (loss)	(89,297		)	488			—			(24,947		)	(113,756		)
Balances at December 31, 2014	$	(85,080	)	$	(768	)	$	(14,380	)	$	(34,832	)	$	(135,060	)
OCI before reclassifications	(73,891		)	76			—			4,570			(69,245		)
Amounts reclassified from AOCI	962			1,010			—			1,726			3,698
Total other comprehensive income (loss)	(72,929		)	1,086			—			6,296			(65,547		)
Balances at December 31, 2015	$	(158,009	)	$	318		$	(14,380	)	$	(28,536	)	$	(200,607	)
OCI before reclassifications	(23,570		)	(1,087		)	—			(6,191		)	(30,848		)
Amounts reclassified from AOCI	(1,407		)	812			—			2,723			2,128
Total other comprehensive income (loss)	(24,977		)	(275		)	—			(3,468		)	(28,720		)
Balances at December 31, 2016	$	(182,986	)	$	43		$	(14,380	)	$	(32,004	)	$	(229,327	)

Income Tax (Provision) Benefit Related To OCI [Table Text Block]

The before-tax amount, income tax (provision) benefit, and net-of-tax amount related to each component of OCI during the reporting periods were as follows:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Before-tax amount
Foreign currency translation adjustment	$	(23,280	)	$	(74,219	)	$	(89,329	)
Foreign currency translation adjustment reclassified into net income on disposal	(1,407		)	962			—
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(1,768		)	123			(915		)
Net hedging (gain) loss reclassified into net income (loss)	1,322			1,639			1,704
Pension benefit obligation adjustment	(3,504		)	8,971			(25,270		)
Total other comprehensive income (loss), before tax	(28,637		)	(62,524		)	(113,810		)

Tax (provision) benefit
Foreign currency translation adjustment	(290		)	328			32
Foreign currency translation adjustment reclassified into net income on disposal	—			—			—
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	681			(47		)	349
Net hedging (gain) loss reclassified into net income (loss)	(510		)	(629		)	(650		)
Pension benefit obligation adjustment	36			(2,675		)	323
Total other comprehensive income (loss) tax (provision) benefit	(83		)	(3,023		)	54

Net-of-tax amount
Foreign currency translation adjustment	(23,570		)	(73,891		)	(89,297		)
Foreign currency translation adjustment reclassified into net income on disposal	(1,407		)	962			—
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(1,087		)	76			(566		)
Net hedging (gain) loss reclassified into net income (loss)	812			1,010			1,054
Pension benefit obligation adjustment	(3,468		)	6,296			(24,947		)
Total other comprehensive income (loss), net of tax	$	(28,720	)	$	(65,547	)	$	(113,756	)

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

Details about the AOCI components reclassified to the Consolidated Statements of Operations during the reporting periods are as follows:



	Amount Reclassified from AOCI⁽¹⁾
	Year Ended December 31,									Affected Line Item in the Income Statement
	2016			2015			2014
	(in thousands)
Amortization of defined benefit pension items
Prior-service costs	$	(58	)	$	(59	)	$	(138	)	⁽²⁾
Actuarial losses	(1,351		)	(1,979		)	(572		)	⁽²⁾
Loss on settlement	(1,343		)	(375		)	(55		)	⁽²⁾
Other	—			(46		)	—			⁽²⁾
Total, before tax	(2,752		)	(2,459		)	(765		)	Income (loss) before income taxes
Tax benefit	29			733			10			Income tax provision
Total, net of tax	$	(2,723	)	$	(1,726	)	$	(755	)	Net income (loss)


⁽¹⁾	Amounts in parenthesis indicate debits to the Consolidated Statements of Operations.


⁽²⁾	These AOCI components are included in the computation of net periodic pension cost. Refer to Note 8 for additional details.

Schedule of Fair Values Of Financial Instruments by Balance Sheet Grouping (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Fair Values Of Financial Instruments by Balance Sheet Grouping [Table Text Block]

The fair values at December 31, 2016 and 2015 do not reflect subsequent changes in the economy, interest rates, tax rates, and other variables that may affect the determination of fair value.



	December 31, 2016				December 31, 2015
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
			(in thousands)
Assets
Cash and cash equivalents	$	133,565	$	133,565	$	131,018	$	131,018
Foreign exchange forwards	169		169		27		27
Interest rate swaps	1,830		1,830		1,632		1,632
Interest rate caps	946		946		1,423		1,423

Liabilities
Credit facility
USD denominated term loan	$	208,125	$	205,676	$	219,375	$	217,830
Multicurrency revolving line of credit	97,167		95,906		151,837		150,570
Interest rate swaps	934		934		868		868
Foreign exchange forwards	449		449		99		99

Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Revenues Gross Profit And Operating Income By Segment [Table Text Block]

Revenues, gross profit, and operating income associated with our segments were as follows:



	Year Ended December 31,
	2016			2015			2014
	(in thousands)
Revenues
Electricity	$	938,374		$	820,306		$	771,857
Gas	569,476			543,805			599,091
Water	505,336			519,422			576,668
Total Company	$	2,013,186		$	1,883,533		$	1,947,616

Gross profit
Electricity	$	282,677		$	225,446		$	200,249
Gas	205,063			185,559			211,623
Water	172,580			145,680			202,178
Total Company	$	660,320		$	556,685		$	614,050

Operating income (loss)
Electricity	$	68,287		$	31,104		$	(77,751	)
Gas	66,813			67,471			76,101
Water	37,266			19,864			71,356
Corporate unallocated	(76,155		)	(65,593		)	(69,226		)
Total Company	96,211			52,846			480
Total other income (expense)	(11,584		)	(15,744		)	(18,745		)
Income (loss) before income taxes	$	84,627		$	37,102		$	(18,265	)

Revenues By Region [Table Text Block]

Revenues by region were as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
United States and Canada	$	1,126,787	$	997,293	$	875,796
Europe, Middle East, and Africa (EMEA)	698,106		701,301		849,841
Other	188,293		184,939		221,979
Total Company	$	2,013,186	$	1,883,533	$	1,947,616

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

Property, plant, and equipment, net, by geographic area were as follows:



	At December 31,
	2016		2015
	(in thousands)
United States	$	70,435	$	72,179
Outside United States	106,023		118,077
Total Company	$	176,458	$	190,256

Depreciation And Amortization Expense Associated With Segments [Table Text Block]

Depreciation and amortization expense associated with our segments was as follows:



	Year Ended December 31,
	2016		2015		2014
	(in thousands)
Electricity	$	28,468	$	35,896	$	47,889
Gas	20,714		20,288		25,706
Water	18,675		19,459		24,257
Corporate Unallocated	461		350		287
Total Company	$	68,318	$	75,993	$	98,139

Quarterly Results (Unaudited) Quarterly Results (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Results (Unaudited) [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]



	First Quarter		Second Quarter			Third Quarter			Fourth Quarter		Total Year
	(in thousands, except per share data)
2016
Statement of operations data (unaudited):
Revenues	$	497,590	$	513,024		$	506,859		$	495,713	$	2,013,186
Gross profit	163,203		169,705			170,749			156,663		660,320
Net income (loss) attributable to Itron, Inc.	10,089		19,917			(9,885		)	11,649		31,770

Earnings (loss) per common share - Basic⁽¹⁾	$	0.27	$	0.52		$	(0.26	)	$	0.30	$	0.83
Earnings (loss) per common share - Diluted⁽¹⁾	$	0.26	$	0.52		$	(0.26	)	$	0.30	$	0.82


	First Quarter		Second Quarter			Third Quarter			Fourth Quarter		Total Year
	(in thousands, except per share data)
2015
Statement of operations data (unaudited):
Revenues	$	446,746	$	470,811		$	469,528		$	496,448	$	1,883,533
Gross profit	138,422		118,554			147,290			152,419		556,685
Net income (loss) attributable to Itron, Inc.	5,398		(14,346		)	12,640			8,986		12,678

Earnings (loss) per common share - Basic⁽¹⁾	$	0.14	$	(0.37	)	$	0.33		$	0.23	$	0.33
Earnings (loss) per common share - Diluted⁽¹⁾	$	0.14	$	(0.37	)	$	0.33		$	0.23	$	0.33


⁽¹⁾	The sum of the quarterly EPS data presented in the table may not equal the annual results due to rounding and the impact of dilutive securities on the annual versus the quarterly EPS calculations.

Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

Summary of Valuation Allowance [Table Text Block]



Description	Balance at Beginning of Period		Other Adjustments			Additions Charged to Costs and Expenses		Balance at End of Period, Noncurrent
	(in thousands)
Year ended December 31, 2016:
Deferred tax assets valuation allowance	$	235,339	$	(12,419	)	$	26,640	$	249,560
Year ended December 31, 2015:
Deferred tax assets valuation allowance	$	257,728	$	(62,791	)	$	40,402	$	235,339
Year ended December 31, 2014:
Deferred tax assets valuation allowance	$	162,588	$	(4,913	)	$	100,053	$	257,728

Summary of Significant Accounting Policies Basis of Consolidation Policy Additional Information (Details)	12 Months Ended
	Dec. 31, 2016
Maximum [Member]
Basis of Consolidation [Abstract]
Ownership Interest To Use Equity Method	50.00%
Ownership Interest To Use Cost Method	20.00%
Minimum [Member]
Basis of Consolidation [Abstract]
Ownership Interest to be Held for Consolidation	50.00%
Noncontrolling Interests [Abstract]
Ownership Interest to be Held for Consolidation	50.00%

Summary of Significant Accounting Policies Property, Plant, and Equipment Policy Additional Information (Details)	12 Months Ended
	Dec. 31, 2016
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Average	30 years
Minimum [Member] \| Machinery and Equipment, Computers and Software, and Furniture [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Average	3 years
Maximum [Member] \| Machinery and Equipment, Computers and Software, and Furniture [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Average	10 years

Summary of Significant Accounting Policies Goodwill and Intangibles Assets Policy Additional Information (Details)	12 Months Ended
	Dec. 31, 2016
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years

Summary of Significant Accounting Policies Revenue Recognition Policy Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred Revenue Arrangement [Line Items]
Unearned revenue	$ 114.3	$ 139.5
Deferred costs	$ 34.4	$ 56.6

Summary of Significant Accounting Policies Stock-Based Compensation (Details)	12 Months Ended
	Dec. 31, 2016
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date	5.00%

Summary of Significant Accounting Policies Foreign Exchange Policy Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Foreign Currency [Abstract]
Foreign Currency Transaction Gain (Loss), Realized	$ (0.3)	$ (3.0)	$ (5.1)

Summary of Significant Accounting Policies ASU Pronouncement Impacts (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)
Subsequent Event [Member] \| Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 15

Earnings Per Share Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income (loss) available to common shareholders	$ 11,649	$ (9,885)	$ 19,917	$ 10,089	$ 8,986	$ 12,640	$ (14,346)	$ 5,398	$ 31,770	$ 12,678	$ (23,670)
Weighted average common shares outstanding - Basic									38,207	38,224	39,184
Dilutive effect of stock-based awards									436	282	0
Weighted average common shares outstanding - Diluted									38,643	38,506	39,184
Earnings (loss) per common share - Basic(1)	$ 0.30	$ (0.26)	$ 0.52	$ 0.27	$ 0.23	$ 0.33	$ (0.37)	$ 0.14	$ 0.83	$ 0.33	$ (0.60)
Earnings (loss) per common share - Diluted	$ 0.30	$ (0.26)	$ 0.52	$ 0.26	$ 0.23	$ 0.33	$ (0.37)	$ 0.14	$ 0.82	$ 0.33	$ (0.60)

Earnings Per Share Stock-based Awards (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of stock-based awards	436	282	0
Stock-based awards excluded from diluted EPS calculation (antidilutive)	700	1,200	1,400

Certain Balance Sheet Components Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts Receivable, Net (Line Items]
Trade receivables (net of allowance of $3,320 and $5,949)	$ 299,870	$ 298,550
Unbilled receivables	51,636	32,345
Total accounts receivable, net	$ 351,506	$ 330,895

Certain Balance Sheet Components Accounts Receivable Allowance (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts Receivable, Net (Line Items]
Allowance	$ 3,320	$ 5,949	$ 6,195

Certain Balance Sheet Components Summary of the Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Summary of Allowance for Doubtful Accounts Activity [Line Items]
Beginning balance	$ 5,949	$ 6,195
Provision for doubtful accounts, net	60	1,025
Accounts written-off	(2,422)	(549)
Effects of change in exchange rates	(267)	(722)
Ending balance	$ 3,320	$ 5,949

Certain Balance Sheet Components Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Inventory [Line Items]
Inventory, Raw Materials, Net of Reserves	$ 103,274	$ 111,191
Inventory, Work in Process, Net of Reserves	7,925	9,400
Inventory, Finished Goods, Net of Reserves	51,850	69,874
Total inventories	$ 163,049	$ 190,465

Certain Balance Sheet Components Property, Plant, and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 279,746	$ 289,015
Computers and Software, Gross	98,125	104,310
Buildings, furniture, and improvements	122,680	127,531
Land	17,179	19,882
Construction in progress, including purchased equipment	29,358	32,639
Total cost	547,088	573,377
Accumulated depreciation	(370,630)	(383,121)
Property, plant, and equipment, net	$ 176,458	$ 190,256

Certain Balance Sheet Components Depreciation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Depreciation expense [Line Items]
Depreciation expense	$ 43,206	$ 44,320	$ 54,435

Intangible Assets Gross Carrying Amount and Accumulated Amortization (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 669,896	$ 702,507	$ 748,148
Accumulated Amortization	(597,745)	(600,575)
Net	72,151	101,932
Core-developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	372,568	388,981
Accumulated Amortization	(354,878)	(358,092)
Net	17,690	30,889
Customer contracts and relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	224,467	238,379
Accumulated Amortization	(170,056)	(168,885)
Net	54,411	69,494
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	61,785	64,069
Accumulated Amortization	(61,766)	(62,571)
Net	19	1,498
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	11,076	11,078
Accumulated Amortization	(11,045)	(11,027)
Net	$ 31	$ 51

Intangible Assets Summary of Intangible Asset Account Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Total Intangible Assets [Abstract]
Beginning balance, Finite-Lived Intangible Assets, Gross	$ 702,507	$ 748,148
Intangible assets acquired	0	4,827
Impairment of Intangible Assets, Finite-lived	0	497
Effect of change in exchange rates	(32,611)	(49,971)
Ending balance, Finite-Lived Intangible Assets, Gross	$ 669,896	$ 702,507

Intangible Assets Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 25,112	$ 31,673	$ 43,619

Intangible Assets Estimated Future Annual Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
2017	$ 17,914
2018	12,383
2019	9,695
2020	7,866
2021	6,845
Beyond 2021	17,448
Total intangible assets subject to amortization	$ 72,151	$ 101,932

Goodwill Schedule of Goodwill Allocated to Reporting Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill beginning balance	$ 468,122	$ 500,820
Goodwill acquired		4,684
Effect of change in exchange rates	(15,628)	(37,382)
Goodwill before impairment	1,054,717	1,096,660	$ 1,191,808
Accumulated impairment losses	(602,223)	(628,538)	(690,988)
Goodwill ending balance	452,494	468,122
Electricity Operating Segment [Member]
Goodwill [Line Items]
Goodwill beginning balance	52,733	55,687
Goodwill acquired		0
Effect of change in exchange rates	(1,360)	(2,954)
Goodwill before impairment	400,299	414,910	449,668
Accumulated impairment losses	(348,926)	(362,177)	(393,981)
Goodwill ending balance	51,373	52,733
Gas Operating Segment [Member]
Goodwill [Line Items]
Goodwill beginning balance	331,436	359,485
Goodwill acquired		0
Effect of change in exchange rates	(11,523)	(28,049)
Goodwill before impairment	319,913	331,436	359,485
Accumulated impairment losses	0	0	0
Goodwill ending balance	319,913	331,436
Water Operating Segment [Member]
Goodwill [Line Items]
Goodwill beginning balance	83,953	85,648
Goodwill acquired		4,684
Effect of change in exchange rates	(2,745)	(6,379)
Goodwill before impairment	334,505	350,314	382,655
Accumulated impairment losses	(253,297)	(266,361)	$ (297,007)
Goodwill ending balance	$ 81,208	$ 83,953

Debt Schedule of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total debt	$ 305,292
Current portion of debt	14,063	$ 11,250
Long-term debt	290,460	358,915
USD Denominated Term Loan [Member]
Debt Instrument [Line Items]
Loans Payable to Bank	208,125	219,375
Debt Issuance Costs, Noncurrent, Net	769	1,047
Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	97,167	151,837
Secured Debt [Member]
Debt Instrument [Line Items]
Total debt	305,292	371,212
Current portion of debt	14,063	11,250
Long-term debt	$ 290,460	$ 358,915

Debt Schedule of Long-Term Debt Maturities (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2017	$ 14,063
2018	19,687
2019	22,500
2020	249,042
2021	0
Total minimum payments on debt	$ 305,292

Debt Schedule of Long-Term Debt Repayments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 79,119	$ 62,998	$ 102,438
Line of Credit [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	67,869	49,873	76,188
USD Denominated Term Loan [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	11,250	13,125	26,250
Secured Debt [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 79,119	$ 62,998	$ 102,438

Debt Credit Facility Additional Information (Details) - USD ($)

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Mar. 31, 2016

Jun. 23, 2015

Debt Instrument [Line Items]

Debt Instrument, Face Amount

$ 725,000,000

Line of Credit Facility, Maximum Borrowing Capacity

500,000,000

Standby Letters of Credit [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Maximum Borrowing Capacity

$ 250,000,000

$ 300,000,000

Letters of Credit Outstanding, Amount

46,100,000

Line of credit facility, remaining borrowing capacity

203,900,000

Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Maximum Borrowing Capacity

50,000,000

Multicurrency revolving line of credit

USD Denominated Term Loan [Member]

Debt Instrument [Line Items]

Debt Instrument, Face Amount

$ 225,000,000

Line of Credit [Member]

Debt Instrument [Line Items]

Multicurrency revolving line of credit

97,167,000

$ 151,837,000

Line of credit facility, remaining borrowing capacity

^[1]

$ 356,730,000

$ 301,589,000

Secured Debt [Member]

Debt Instrument [Line Items]

Debt Instrument, Collateral

All obligations under the 2015 credit facility are guaranteed by Itron, Inc. and material U.S. domestic subsidiaries and are secured by a pledge of substantially all of the assets of Itron, Inc. and material U.S. domestic subsidiaries, including a pledge of 100% of the capital stock of material U.S. domestic subsidiaries and up to 66% of the voting stock (100% of the non-voting stock) of their first-tier foreign subsidiaries. In addition, the obligations of any foreign subsidiary who is a foreign borrower, as defined by the 2015 credit facility, are guaranteed by the foreign subsidiary and by its direct and indirect foreign parents.

Scheduled Quarterly Repayments September 2015 through June 2017 [Domain] | USD Denominated Term Loan [Member]

Debt Instrument [Line Items]

Repayments of Secured Debt

$ 2,800,000

Scheduled Quarterly Repayments September 2017 through June 2018 [Domain] | USD Denominated Term Loan [Member]

Debt Instrument [Line Items]

Repayments of Secured Debt

4,200,000

Scheduled Quarterly Repayments September 2018 through March 2020 [Domain] | USD Denominated Term Loan [Member]

Debt Instrument [Line Items]

Repayments of Secured Debt

$ 5,600,000

Minimum [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Unused Capacity, Commitment Fee Percentage

0.18%

Maximum [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Unused Capacity, Commitment Fee Percentage

0.30%

London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

the LIBOR rate

Debt Instrument, Basis Spread on Variable Rate

1.25%

1.75%

Debt Instrument, Interest Rate at Period End

2.02%

2.18%

EURIBOR [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

EURIBOR rate

Debt Instrument, Basis Spread on Variable Rate

1.25%

1.75%

Debt Instrument, Interest Rate at Period End

1.25%

1.75%

Alternate base rate (1) [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

the prime rate

Alternate base rate (2) [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

the Federal Reserve effective rate

Debt Instrument, Basis Spread on Variable Rate

0.50%

Alternate base rate (3) [Member]

Debt Instrument [Line Items]

Debt Instrument, Description of Variable Rate Basis

one month LIBOR

Debt Instrument, Basis Spread on Variable Rate

1.00%

[1]	Refer to Note 6 for details regarding our secured credit facilities.

Derivative Financial Instruments Derivative and Nonderivative Hedging Instrument Fair Value Disclosure (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Asset Derivatives [Abstract]
Derivative Asset	$ 2,945	$ 3,082
Liability Derivatives [Abstract]
Derivative Liability	1,383	967
Designated as Hedging Instrument [Member] \| Other Noncurrent Assets [Member] \| Interest Rate Cap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Cash Flow Hedge Asset at Fair Value	376	1,423
Designated as Hedging Instrument [Member] \| Other Noncurrent Assets [Member] \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Cash Flow Hedge Asset at Fair Value	1,830	1,632
Designated as Hedging Instrument [Member] \| Other Current Assets [Member] \| Interest Rate Cap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Cash Flow Hedge Asset at Fair Value	3	0
Designated as Hedging Instrument [Member] \| Other Current Liabilities [Member] \| Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Cash Flow Hedge Asset at Fair Value	934	868
Not Designated as Hedging Instrument [Member] \| Other Noncurrent Assets [Member] \| Interest Rate Cap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Cash Flow Hedge Asset at Fair Value	563	0
Not Designated as Hedging Instrument [Member] \| Other Current Assets [Member]
Asset Derivatives [Abstract]
Foreign exchange forward contracts	169	27
Not Designated as Hedging Instrument [Member] \| Other Current Assets [Member] \| Interest Rate Cap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Cash Flow Hedge Asset at Fair Value	4	0
Not Designated as Hedging Instrument [Member] \| Other Current Liabilities [Member]
Liability Derivatives [Abstract]
Foreign exchange forward contracts	$ 449	$ 99

Derivative Financial Instruments Effect of Net Investment Hedge Nonderivative Financial Instrument on OCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period	$ (200,607)
Unrealized gain (loss) on derivative instruments	(1,087)	$ 76	$ (566)
Realized (gains) losses reclassified into net income (loss)	812	1,010	1,054
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(229,327)	(200,607)
Accumulated Net Gain (Loss) from Derivative and Nonderivative Instruments Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period	(14,062)	(15,148)	(15,636)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	$ (14,337)	$ (14,062)	$ (15,148)

Derivative Financial Instruments Offsetting of Derivative Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Offsetting Assets [Line Items]
Derivative Asset	$ 2,945	$ 3,082
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	1,322	565
Derivative, Collateral, Obligation to Return Cash	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	$ 1,623	$ 2,517

Derivative Financial Instruments Offsetting of Derivative Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Offsetting Liabilities [Line Items]
Derivative Liability	$ 1,383	$ 967
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	1,322	565
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	$ 61	$ 402

Derivative Financial Instruments Derivative Financial Instruments Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2012
Derivative [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (229,327,000)	$ (200,607,000)
Long-term Debt	305,292,000
Secured Debt [Member]
Derivative [Line Items]
Long-term Debt	305,292,000	371,212,000
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
Derivative [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (14,380,000)	$ (14,380,000)	$ (14,380,000)	$ (14,380,000)
Number of Counterparties [Member]
Derivative [Line Items]
Description of Derivative Activity Volume	three	nine
London Interbank Offered Rate (LIBOR) [Member] \| Secured Debt [Member]
Derivative [Line Items]
Long-term Debt	$ 248,100,000
Interest Rate Swap [Member]
Derivative [Line Items]
Number of Interest Rate Derivatives Held	1				6
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	$ 900,000
Derivative, Notional Amount	$ 214,000,000				$ 200,000,000
Derivative, Fixed Interest Rate	1.42%				1.00%
Interest Rate Cap [Member]
Derivative [Line Items]
Number of Interest Rate Derivatives Held	3
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	$ 200,000
Derivative, Cap Interest Rate	2.00%
Derivative, Notional Amount	$ 100,000,000
Derivative Purchase Price	$ 1,700,000
Interest Rate Cap [Member] \| Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held	2
Forward Contracts [Member]
Derivative [Line Items]
Description of Derivative Activity Volume	49
Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member] \| Minimum [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 120,000
Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member] \| Maximum [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 42,300,000

Derivative Financial Instruments Effect of Cash Flow Derivatives on the Balance Sheet and Income Statement, Before Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest Rate Swap Contracts [Abstract]
Loss Reclassified from AOCI into Income (Effective Portion)	$ (1,322)	$ (1,639)	$ (1,704)
Interest Rate Swap [Member]
Interest Rate Swap Contracts [Abstract]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	(1,163)	367	(915)
Interest Rate Swap [Member] \| Interest Expense [Member]
Interest Rate Swap Contracts [Abstract]
Loss Reclassified from AOCI into Income (Effective Portion)	(1,296)	(1,639)	(1,704)
Loss Recognized in Income on Derivative (Ineffective Portion)	0	0	0
Interest Rate Cap [Member]
Interest Rate Swap Contracts [Abstract]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	(605)	(244)	0
Interest Rate Cap [Member] \| Interest Expense [Member]
Interest Rate Swap Contracts [Abstract]
Loss Reclassified from AOCI into Income (Effective Portion)	(27)	0	0
Loss Recognized in Income on Derivative (Ineffective Portion)	$ (1)	$ 0	$ 0

Derivative Financial Instruments Derivatives Not Designated as Hedging Relationships (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Income (Expense) [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 537	$ (3,145)	$ (5,248)
Interest Rate Cap [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments		$ 0	$ 0
Interest Rate Cap [Member] \| Interest Expense [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments	$ 129

Defined Benefit Pension Plans Change in Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at January 1,	$ 98,767	$ 116,178
Service cost	3,472	4,572	$ 3,559
Interest cost	2,573	2,380	3,476
Actuarial (gain) loss	7,733	(5,211)
Benefits paid	(9,481)	(4,382)
Foreign currency exchange rate changes	(4,386)	(12,190)
Defined Benefit Plan, Curtailments	14	(1,683)
Defined Benefit Plan, Settlements, Benefit Obligation	(1,431)	0
Defined Benefit Plan, Other Changes	0	(897)
Benefit obligation at December 31,	97,261	98,767	116,178
Fair value of plan assets at January 1,	9,662	10,761
Actual return on plan assets	604	159
Company contributions	348	671
Foreign currency exchange rate changes	(29)	(1,621)
Fair value of plan assets at December 31,	10,215	9,662	$ 10,761
Net pension benefit obligation at fair value	87,046	89,105
Other Pension Plan, Postretirement or Supplemental Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefits paid	$ (370)	$ (308)

Defined Benefit Pension Plans Schedule of Amounts Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Amounts Recognized in the Consolidated Balance Sheets [Line Items]
Plan Assets in Other Long Term Assets	$ 654	$ 359
Current Portion of Pension Plan Liability in Wages and Benefits Payable	3,202	3,493
Long-term portion of pension plan liability	84,498	85,971
Net Pension Plan Benefit Liability	$ 87,046	$ 89,105

Defined Benefit Pension Plans Schedule of Net Periodic Benefit Cost Not yet Recognized (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 26,767	$ 24,687
Net prior service cost	619	706
Amount included in accumulated other comprehensive income	$ 27,386	$ 25,393

Defined Benefit Pension Plans Schedule of Amounts Recognized in Other Comprehensive Income (loss), pre-tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss	$ 6,316	$ (6,894)	$ 25,838
Settlement/ curtailment loss	(1,343)	(336)	(55)
Plan asset (gain) loss	(64)	343	129
Amortization of net actuarial gain (loss)	(1,351)	(1,979)	(572)
Amortization of prior service cost	(58)	(59)	(138)
Other	4	(46)	68
Other comprehensive (income) loss	$ 3,504	$ (8,971)	$ 25,270

Defined Benefit Pension Plans Schedule of Net Periodic Pension Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3,472	$ 4,572	$ 3,559
Interest cost	2,573	2,380	3,476
Expected Return on Plan Assets	(540)	(502)	(619)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	58	59	138
Amortization of actuarial net (gains) loss	1,351	1,979	572
Defined Benefit Plan, Settlement and Other Benefit Costs	1,340	420	55
Net Periodic Benefit Cost	$ 8,254	$ 8,908	$ 7,181

Defined Benefit Pension Plans Schedule of Significant Actuarial Weighted Average Assumptions Used in Determining the Benefit Obligation and Net Periodic Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.18%	2.59%	2.36%
Expected annual rate of compensation increase	3.65%	3.60%	3.37%
Discount rate	2.59%	2.36%	3.76%
Expected rate of return on plan assets	5.29%	5.45%	5.40%
Expected annual rate of compensation increase	3.60%	3.37%	3.33%

Defined Benefit Pension Plans Schedule of Accumulated Benefit Obligation in Excess of the Fair Value of Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 94,110	$ 95,814
Accumulated benefit obligation	84,448	86,534
Fair value of plan assets	$ 6,410	$ 6,502

Defined Benefit Pension Plans Fair Values of Plan Investments by Asset Category (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 10,215	$ 9,662	$ 10,761
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	783	795
Guaranteed Insurance Contract, Type of Benefit [Domain]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7,011	7,089
Securities (Assets) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	2,421	1,778
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	783	795
Fair Value, Inputs, Level 1 [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	783	795
Fair Value, Inputs, Level 1 [Member] \| Guaranteed Insurance Contract, Type of Benefit [Domain]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] \| Securities (Assets) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	9,432	8,867	10,035
Fair Value, Inputs, Level 3 [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Guaranteed Insurance Contract, Type of Benefit [Domain]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7,011	7,089	7,440
Fair Value, Inputs, Level 3 [Member] \| Securities (Assets) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 2,421	$ 1,778	$ 2,595

Defined Benefit Pension Plans Level 3 Plan Asset Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 10,215	$ 9,662	$ 10,761
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(29)	(1,621)
Defined Benefit Plan, Actual Return on Plan Assets	604	159
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	9,432	8,867	10,035
Defined Benefit Plan, Transfers Between Measurement Levels	0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(45)	(1,551)
Defined Benefit Plan, Purchases, Sales, and Settlements	(30)	290
Defined Benefit Plan, Actual Return on Plan Assets	640	93
Guaranteed Insurance Contract, Type of Benefit [Domain]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7,011	7,089
Guaranteed Insurance Contract, Type of Benefit [Domain] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7,011	7,089	7,440
Defined Benefit Plan, Transfers Between Measurement Levels	0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(367)	(772)
Defined Benefit Plan, Purchases, Sales, and Settlements	54	372
Defined Benefit Plan, Actual Return on Plan Assets	235	49
Securities (Assets) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	2,421	1,778
Securities (Assets) [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	2,421	1,778	$ 2,595
Defined Benefit Plan, Transfers Between Measurement Levels	0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	322	(779)
Defined Benefit Plan, Purchases, Sales, and Settlements	(84)	(82)
Defined Benefit Plan, Actual Return on Plan Assets	$ 405	$ 44

Defined Benefit Pension Plans Expected Future Annual Benefit Payments (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
2017	$ 3,655
2018	2,662
2019	2,737
2020	3,285
2021	3,918
2022-2026	$ 22,929

Defined Benefit Pension Plans Accumulated Benefit Obligation Additional Details (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	$ 1.6
Defined Benefit Plan, Accumulated Benefit Obligation	$ 87.2	$ 89.0

Defined Benefit Pension Plans Significant Actuarial Weighted Assumptions (Discount Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.18%	2.59%	2.36%
Actuarial (gain) loss	$ (7,733)	$ 5,211
Percentage of Benefit Plans Denominated in Euro [Domain]
Defined Benefit Plan Disclosure [Line Items]
Percentage of benefit plans denominated in euro	94%
Euro Denominated Benefit Plans [Domain]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Support, Methodology and Source Data	we use two discount rates, with consideration of the duration of the plans, using a hypothetical yield curve developed from euro-denominated AA-rated corporate bond issues, partially weighted for market value, with minimum amounts outstanding of €500 million for bonds with less than 10 years to maturity and €50 million for bonds with 10 or more years to maturity, and excluding the highest and lowest yielding 10% of bonds within each maturity group.
Shorter duration euro denominated defined benefit plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	0.75%
Longer duration euro denominated defined benefit plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	1.75%
Defined Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Change in Discount Rate	41 basis points

Stock-Based Compensation Expense and Related Tax Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation [Abstract]
Stock options	$ 2,357	$ 2,648	$ 2,333
Restricted stock units	14,723	10,735	14,591
Unrestricted stock awards	955	706	936
Allocated Share-based Compensation Expense	1,077	0	0
Total stock-based compensation	19,112	14,089	17,860
Related tax benefit	$ 4,927	$ 4,228	$ 4,994

Stock-Based Compensation Stock Option Black Scholes Option Pricing Model Assumptions (Details) - Employee Stock Option [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	33.50%	34.30%	39.30%
Risk-free interest rate	1.30%	1.70%	1.70%
Expected term (years)	5 years 6 months	5 years 6 months	5 years 6 months

Stock-Based Compensation Stock Option Summary (Details) - Employee Stock Option [Member]
$ / shares in Units, shares in Thousands, $ in Thousands

12 Months Ended

Dec. 31, 2016

USD ($)

$ / shares

Dec. 31, 2015

USD ($)

$ / shares

Dec. 31, 2014

USD ($)

$ / shares

Dec. 31, 2013

USD ($)

$ / shares

[Line Items]

Outstanding, beginning balance, Number | shares

1,180

1,123

1,180

Outstanding, beginning balance, Weighted Average Exercise Price Per Share

$ 48.31

$ 51.90

$ 54.79

Outstanding, beginning balance, Aggregate Intrinsic Value | $

^[1]

$ 405

$ 1,676

$ 1,300

Granted, Number | shares

191

291

160

Granted, Weighted Average Exercise Price Per Share

$ 40.40

$ 35.25

$ 35.65

Granted, Weighted Average Grant Date Fair Value

$ 13.27

$ 12.09

$ 13.65

Exercised, Number | shares

(58)

(24)

(67)

Exercised, Weighted Average Exercise Price Per Share

$ 37.00

$ 36.05

$ 28.03

Exercised, Aggregate Intrinsic Value | $

^[1]

$ 742

$ 26

$ 826

Forfeited, Number | shares

(36)

(17)

(7)

Forfeited, Weighted Average Exercise Price Per Share

$ 35.29

$ 37.47

$ 44.06

Expired, Number | shares

(318)

(193)

(143)

Expired, Weighted Average Exercise Price Per Share

$ 55.13

$ 52.17

$ 68.97

Outstanding, ending balance, Number | shares

959

1,180

1,123

1,180

Outstanding, ending balance, Weighted Average Exercise Price Per Share

$ 45.64

$ 48.31

$ 51.90

$ 54.79

Outstanding, ending balance, Weighted Average Remaining Contractual Term

6 years 7 months

5 years 7 months 30 days

4 years 4 months 22 days

4 years 7 months 23 days

Outstanding, ending balance, Aggregate Intrinsic Value | $

^[1]

$ 19,125

$ 405

$ 1,676

$ 1,300

Exercisable, Number | shares

562

Exercisable, Weighted Average Exercise Price Per Share

$ 51.18

Exercisable, Weighted Average Remaining Contractual Term

5 years 1 month

Exercisable, Aggregate Intrinsic Value | $

^[1]

$ 9,181

Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Number | shares

385

Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Outstanding Weighted Average Exercise Price

$ 37.76

Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Weighted Average Remaining Contractual Term

8 years 8 months

Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Aggregate Intrinsic Value | $

^[1]

$ 9,658

[1]

Stock-Based Compensation Long-Term Performance Restricted Stock Unit Award Monte Carlo Pricing Model Assumptions (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value	$ 41.58	$ 35.09	$ 35.74
Long Term Performance Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	30.00%	30.10%	32.30%
Risk-free interest rate	0.70%	0.70%	0.40%
Expected term (years)	1 year 9 months 10 days	2 years 1 month 10 days	2 years 10 days
Weighted-average grant date fair value	$ 44.92	$ 33.48	$ 35.15

Stock-Based Compensation Restricted Stock Units Summary (Details) - USD ($)
$ / shares in Units, $ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Restricted Stock Units (RSUs) [Member]

[Line Items]

Outstanding, beginning balance, Number

756,000

682,000

658,000

Granted, Number

306,000

^[1]

434,000

^[2]

350,000

^[3]

Weighted-average grant date fair value

$ 41.58

$ 35.09

$ 35.74

Forfeited, Number

(82,000)

(64,000)

(35,000)

Outstanding, ending balance, Number

668,000

756,000

682,000

Long Term Performance Restricted Stock Award [Member]

[Line Items]

Granted, Number

110,259

15,648

14,433

Vested and Released [Member] | Restricted Stock Units (RSUs) [Member]

[Line Items]

Issued, Number

(312,000)

(296,000)

(291,000)

Released, Aggregate Intrinsic Value

^[4]

$ 11,944

$ 12,204

$ 14,402

Vested but Not Released [Member] | Restricted Stock Units (RSUs) [Member]

[Line Items]

Issued, Number

(115,000)

Vested but not released, Aggregate Intrinsic Value

^[4]

$ 7,242

Expected to Vest [Member] | Restricted Stock Units (RSUs) [Member]

[Line Items]

Outstanding, ending balance, Number

477,000

Expected to vest, Aggregate Intrinsic Value

^[4]

$ 30,006

[1]	Restricted stock units include 110,259 shares for the 3-year award under the 2014 Performance Award Agreement, which are eligible for distribution at December 31, 2016.
[2]	Restricted stock units include 15,648 shares for the 3-year award under the 2013 Performance Award Agreement, which are eligible for distribution at December 31, 2015.
[3]	Restricted stock units include 14,433 shares for the 2-year award under the 2013 Performance Award Agreement, which are eligible for distribution at December 31, 2014.
[4]	The aggregate intrinsic value is the market value of the stock, before applicable income taxes, based on the closing price on the stock release dates or at the end of the period for restricted stock units expected to vest.

Stock-Based Compensation Unrestricted Stock Awards Summary (Details) - Unrestricted Stock Award [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
[Line Items]
Shares of unrestricted stock granted	21	20	24
Weighted average grant date fair value per share	$ 44.94	$ 35.01	$ 39.06

Stock-Based Compensation Phantom Stock Units Summary (Details) - Phantom Share Units (PSUs) [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning balance, Number	0
Granted, Number	63
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(1)
Outstanding, ending balance, Number	62
Weighted-average grant date fair value \| $ / shares	$ 40.11
Expected to Vest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, ending balance, Number	57

Stock-Based Compensation Employee Stock Purchase Plan (Details) - shares

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Employee Stock [Member]

[Line Items]

Shares of stock sold to employees(1)

^[1]

[1]	Stock sold to employees during each fiscal quarter under the ESPP is associated with the offering period ending on the last day of the previous fiscal quarter.

Stock-Based Compensation Narrative (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Employee Stock Option [Member]

[Line Items]

Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized

$ 3.2

Award vesting rights

Options generally become exercisable in three equal annual installments beginning one year from the date of grant

Unrecognized compensation expense, Expected weighted average period for recognition

1 year 11 months

Stock Options Expiration Period

10 years

Restricted Stock Units (RSUs) [Member]

[Line Items]

Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized

$ 21.6

Unrecognized compensation expense, Expected weighted average period for recognition

1 year 9 months 10 days

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

3 years

Granted, Number

306,000

^[1]

434,000

^[2]

350,000

^[3]

Phantom Share Units (PSUs) [Member]

[Line Items]

Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized

$ 2.8

Unrecognized compensation expense, Expected weighted average period for recognition

2 years 2 months 10 days

Deferred Compensation Share-based Arrangements, Liability, Current

$ 1.0

Granted, Number

63,000

Long Term Performance Restricted Stock Award [Member]

[Line Items]

Granted, Number

110,259

15,648

14,433

Share-based Compensation Arrangement by Share-based Payment Award, Performance Condition Vesting Range, Lower Range Limit

0.00%

Share-based Compensation Arrangement by Share-based Payment Award, Performance Condition Vesting Range, Upper Range Limit

160.00%

Share-based Compensation Arrangement by Share-based Payment Award, Market Condition Multiplier, Lower Range Limit

75.00%

Share-based Compensation Arrangement by Share-based Payment Award, Market Condition Multiplier, Upper Range Limit

125.00%

Share-based Compensation Arrangement by Share-based Payment Award, Possible Total Percentage of Shares Vested, Lower Range Limit

0.00%

Share-based Compensation Arrangement by Share-based Payment Award, Possible Total Percentage of Shares Vested, Upper Range Limit

200.00%

Employee Stock [Member]

[Line Items]

Number of shares available for future grant under the Stock Incentive Plan

371,000

Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date

5.00%

ESPP, maximum percentage of employee salary eligible for participation

10.00%

Stock Incentive Plan [Member]

[Line Items]

Number of shares authorized for issuance under the Stock Incentive Plan

7,473,956

Number of shares available for future grant under the Stock Incentive Plan

2,092,602

Share-based Compensation Arrangement by Share-based Payment Award, Description

The Stock Incentive Plan shares are subject to a fungible share provision such that, with respect to grants made after December 31, 2009, the authorized share reserve is reduced by (i) one share for every one share subject to a stock option or share appreciation right granted under the Plan and (ii) 1.7 shares for every one share of common stock that was subject to an award other than an option or stock appreciation right.

[1]	Restricted stock units include 110,259 shares for the 3-year award under the 2014 Performance Award Agreement, which are eligible for distribution at December 31, 2016.
[2]	Restricted stock units include 15,648 shares for the 3-year award under the 2013 Performance Award Agreement, which are eligible for distribution at December 31, 2015.
[3]	Restricted stock units include 14,433 shares for the 2-year award under the 2013 Performance Award Agreement, which are eligible for distribution at December 31, 2014.

Defined Contribution Bonus and Profit Sharing Plans Schedule of Defined Contribution Plans Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Defined contribution plans expense	$ 7,941	$ 6,579	$ 7,097

Defined Contribution Bonus and Profit Sharing Plans Schedule of Bonus and Profit Sharing Plans Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Bonus and Profit Sharing Plans and Awards Expense	$ 43,377	$ 14,192	$ 34,989

Defined Contribution Bonus and Profit Sharing Plans Narrative (Details) - Employer Match Percentage [Member]	12 Months Ended
	Dec. 31, 2016
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Percentage of employer match into employee savings plan.	50.00%
Employer Matching Contribution, Percent of Employees' Gross Pay	6.00%

Income Taxes Schedule of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	$ 20,490	$ 5,033	$ 17,749
State and local	2,708	1,633	775
Foreign	12,586	13,945	20,269
Total current	35,784	20,611	38,793
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	10,805	3,951	(82,186)
State and local	1,160	(972)	(979)
Foreign	(24,815)	(41,893)	(51,646)
Total deferred	(12,850)	(38,914)	(134,811)
Change in valuation allowance	26,640	40,402	100,053
Total provision for income taxes	$ 49,574	$ 22,099	$ 4,035

Income Taxes Schedule of Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income (loss) before income taxes
Domestic	$ 196,750	$ 115,526	$ 86,605
Foreign	(112,123)	(78,424)	(104,870)
Income (loss) before income taxes	84,627	37,102	(18,265)
Expected federal income tax provision (benefit)	29,619	12,986	(6,393)
Goodwill impairment	0	0	119
Change in valuation allowance	26,640	40,402	100,053
Stock-based compensation	2,762	939	1,255
Foreign earnings	(12,584)	(33,364)	(31,544)
Tax credits	(7,471)	(5,257)	(91,148)
Uncertain tax positions, including interest and penalties	3,817	4,274	1,519
Change in tax rates	67	312	(20)
State income tax provision (benefit), net of federal effect	2,806	(14)	(1,235)
U.S. tax provision on foreign earnings	997	203	31,309
Domestic production activities deduction	(2,424)	(1,100)	(2,312)
Local foreign taxes	2,914	1,450	2,295
Other, net	2,431	1,268	137
Total provision for income taxes	$ 49,574	$ 22,099	$ 4,035

Income Taxes Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands

Dec. 31, 2016

Dec. 31, 2015

Deferred tax assets

Loss carryforwards

$ 194,381

^[1]

$ 190,545

Tax Credit Carryforward, Amount

53,323

^[2]

52,131

Accrued expenses

36,336

33,546

Pension plan benefits expense

16,822

16,232

Warranty reserves

21,306

25,129

Depreciation and amortization

15,698

21,499

Equity compensation

6,924

9,303

Inventory valuation

3,086

4,068

Deferred tax asset, deferred revenue

4,896

9,097

Deferred Tax Assets, Unrealized Currency Losses

291

Other deferred tax assets, net

13,621

11,770

Total deferred tax assets

366,393

373,611

Valuation allowance

(249,560)

(235,339)

Total deferred tax assets, net of valuation allowance

116,833

138,272

Deferred tax liabilities

Depreciation and amortization

(19,995)

(27,000)

Tax effect of accumulated translation

(100)

Other deferred tax liabilities, net

(5,698)

(3,608)

Total deferred tax liabilities

(25,793)

(30,608)

Net deferred tax assets

91,040

$ 107,664

Deferred Tax Assets, Tax Credit Carryforwards, General Business

15,300

Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax

2,500

Deferred Tax Assets, Tax Credit Carryforwards, Foreign

49,400

Deferred Tax Assets, Tax Credit Carryforwards, Other

10,000

Tax Credit Carryforward, Valuation Allowance

32,300

U.S. federal

Deferred tax liabilities

Loss carryforwards by Jurisdiction

^[1]

13,200

LUXEMBOURG

Deferred tax liabilities

Loss carryforwards by Jurisdiction

^[1]

483,500

General Business Tax Credit Carryforward [Member]

Deferred tax liabilities

Tax Credit Carryforward, Valuation Allowance

$ 6,000

[1]

[2]

Income Taxes Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Abstract]
Unrecognized tax benefits, beginning of period	$ 54,880	$ 28,146	$ 28,615
Gross increase to positions in prior years	1,164	6,461	2,749
Gross decrease to positions in prior years	(612)	(2,512)	(1,641)
Gross increases to current period tax positions	5,071	25,741	3,008
Audit settlements	(1,116)	0	0
Decrease related to lapsing of statute of limitations	(860)	(908)	(1,715)
Effect of change in exchange rates	(901)	(2,048)	(2,870)
Unrecognized tax benefits, end of period	57,626	54,880	28,146
The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate	56,411	53,602	26,980
Net interest and penalties expense	193	880	$ 469
Accrued interest	2,473	2,105
Accrued penalties	$ 2,329	$ 2,577

Income Taxes Income Tax Examination by Jurisdiction (Details)	12 Months Ended
	Dec. 31, 2016
U.S. federal
Income Tax Examination [Line Items]
Earliest year subject to examination by major tax jurisdiction	2000
FRANCE
Income Tax Examination [Line Items]
Earliest year subject to examination by major tax jurisdiction	2010
GERMANY
Income Tax Examination [Line Items]
Earliest year subject to examination by major tax jurisdiction	2011
BRAZIL
Income Tax Examination [Line Items]
Earliest year subject to examination by major tax jurisdiction	2011
UNITED KINGDOM
Income Tax Examination [Line Items]
Earliest year subject to examination by major tax jurisdiction	2013
ITALY
Income Tax Examination [Line Items]
Earliest year subject to examination by major tax jurisdiction	2008

Income Taxes Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Percent	58.60%	59.60%	(22.10%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Deferred Tax Assets, Valuation Allowance	$ 249,560	$ 235,339
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax	2,500
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	49,400
Deferred Tax Assets, Tax Credit Carryforwards, General Business	15,300
Excess tax benefits from employee stock plan exercises	40,900
Tax effect of excess benefits from employee stock plan exercises, which will increase our common stock when it reduces our cash taxes payable, and which is not recognized in our deferred tax assets	15,000
Undistributed Earnings of Foreign Subsidiaries and Foreign Corporate Joint Ventures [Member]
Undistributed Earnings of Foreign Subsidiaries	$ 4,900	$ 8,700

Commitments and Contingencies Rental Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Long-term Purchase Commitment [Line Items]
Rental expense	$ 14,232	$ 15,524	$ 19,178

Commitments and Contingencies Future Minimum Lease Payment Schedule (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017	$ 13,128
2018	12,238
2019	9,152
2020	6,026
2021	5,363
Beyond 2021	8,510
Future minimum lease payments	$ 54,417

Commitments and Contingencies Available Lines of Credit, Outstanding Standby Letter of Credits, and Bonds (Details) - USD ($)
$ in Thousands

Dec. 31, 2016

Dec. 31, 2015

Jun. 23, 2015

Line of Credit Facility [Line Items]

Multicurrency revolving line of credit

$ 500,000

Line of Credit Facility, Remaining capacity to support letters of credit

^[1],[2]

$ 203,897

Credit Facility [Member]

Line of Credit Facility [Line Items]

Multicurrency revolving line of credit

^[2]

500,000

$ 500,000

Long-term borrowings

^[2]

(97,167)

(151,837)

Standby LOCs issued and outstanding

^[2]

(46,103)

(46,574)

Net available for additional borrowings and LOCs

^[1],[2]

253,426

Unsecured Multicurrency Revolving Lines of Credit [Member]

Line of Credit Facility [Line Items]

Multicurrency revolving line of credit

91,809

97,989

Standby LOCs issued and outstanding

(21,734)

(31,122)

Short-term borrowings(2)

^[3]

(69)

(3,884)

Net available for additional borrowings and LOCs

70,006

62,983

Surety Bond [Member]

Line of Credit Facility [Line Items]

Unsecured surety bonds in force

48,221

87,558

Line of Credit [Member]

Line of Credit Facility [Line Items]

Long-term borrowings

(97,167)

(151,837)

Net available for additional borrowings and LOCs

^[2]

$ 356,730

$ 301,589

[1]	During the year ended December 31, 2016, as a result of entering into the first and second amendments to the 2015 credit facility, the maximum limit available for additional standby LOCs under sub-facility was reduced from $300 million to $250 million.
[2]	Refer to Note 6 for details regarding our secured credit facilities.
[3]	Short-term borrowings are included in “Other current liabilities” on the Consolidated Balance Sheets.

Commitments and Contingencies Warranty Account Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Beginning balance	$ 54,512	$ 36,548
New product warranties	7,987	8,380
Other adjustments and expirations	5,933	37,604
Claims activity	(24,364)	(25,955)
Effect of change in exchange rates	(766)	(2,065)
Ending balance	43,302	54,512	$ 36,548
Less: current portion of warranty	24,874	36,927
Long-term warranty	18,428	17,585
Warranty Expense	$ 13,920	$ 45,984	$ 9,238

Commitments and Contingencies Extended Warranty (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Beginning balance	$ 139,500
Ending balance	114,300	$ 139,500
Less: current portion of unearned revenue for extended warranty	64,976	73,301
Extended Warranty [Member]
Beginning balance	33,654	34,138
Unearned revenue for new extended warranties	1,437	2,792
Unearned revenue recognized	(3,594)	(2,832)
Effect of change in exchange rates	52	(444)
Ending balance	31,549	33,654
Less: current portion of unearned revenue for extended warranty	4,226	3,565
Long-term unearned revenue for extended warranty within Other long-term obligations	$ 27,323	$ 30,089

- Definition

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

+ References + Details

- Definition

The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References + Details

Commitments and Contingencies Health Benefit Plan Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Plan costs	$ 27,276	$ 25,355	$ 23,206

Commitments and Contingencies Incurred But Not Reported Health Benefit Cost Accrual (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
IBNR accrual	$ 2,441	$ 2,051

Commitments and Contingencies Narrative (Details) - USD ($)
$ in Thousands

Dec. 31, 2016

Mar. 31, 2016

Dec. 31, 2015

Jun. 23, 2015

Line of Credit Facility, Maximum Borrowing Capacity

$ 500,000

Credit Facility [Member]

Line of Credit Facility, Maximum Borrowing Capacity

^[1]

$ 500,000

Standby Letters of Credit [Member]

Line of Credit Facility, Maximum Borrowing Capacity

$ 250,000

$ 300,000

[1]	Refer to Note 6 for details regarding our secured credit facilities.

Restructuring Expected Cost, Costs Recognized, and Costs to be Recognized - 2016 Projects (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense			$ 49,090	$ (7,263)	$ 49,482
2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 67,794		67,794
Costs incurred and charged to expense	7,800	$ 40,000	47,794
Restructuring and Related Cost, Expected Cost Remaining	20,000		20,000
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense			39,943
Employee Severance [Member] \| 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	44,186		44,186
Costs incurred and charged to expense			39,686
Restructuring and Related Cost, Expected Cost Remaining	4,500		4,500
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense			7,188
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] \| 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	7,219		7,219
Costs incurred and charged to expense			7,219
Restructuring and Related Cost, Expected Cost Remaining	0		0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense			1,959
Other Restructuring [Member] \| 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	16,389		16,389
Costs incurred and charged to expense			889
Restructuring and Related Cost, Expected Cost Remaining	15,500		15,500
Electricity Operating Segment [Member] \| 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	10,827		10,827
Costs incurred and charged to expense			8,827
Restructuring and Related Cost, Expected Cost Remaining	2,000		2,000
Gas Operating Segment [Member] \| 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	34,468		34,468
Costs incurred and charged to expense			23,968
Restructuring and Related Cost, Expected Cost Remaining	10,500		10,500
Water Operating Segment [Member] \| 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	20,061		20,061
Costs incurred and charged to expense			13,061
Restructuring and Related Cost, Expected Cost Remaining	7,000		7,000
Corporate, Non-Segment [Member] \| 2016 Projects [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2,438		2,438
Costs incurred and charged to expense			1,938
Restructuring and Related Cost, Expected Cost Remaining	$ 500		$ 500

Restructuring Expected Costs, Cost Recognized, and Remaining Costs to be Recognized - 2014 Projects (Details) - USD ($) $ in Thousands	12 Months Ended			15 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 49,090	$ (7,263)	$ 49,482
Employee severance costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	39,943
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	7,188
Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,959
2014 Project [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	48,478
Restructuring Charges	1,296			$ 47,182
Restructuring and Related Cost, Expected Cost Remaining	0
2014 Project [Member] \| Electricity Operating Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	20,610
Restructuring Charges	(1,133)			21,743
Restructuring and Related Cost, Expected Cost Remaining	0
2014 Project [Member] \| Gas Operating Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	13,631
Restructuring Charges	1,776			11,855
Restructuring and Related Cost, Expected Cost Remaining	0
2014 Project [Member] \| Water Operating Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	1,995
Restructuring Charges	55			1,940
Restructuring and Related Cost, Expected Cost Remaining	0
2014 Project [Member] \| Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	12,242
Restructuring Charges	598			11,644
Restructuring and Related Cost, Expected Cost Remaining	0
2014 Project [Member] \| Employee severance costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	34,630
Restructuring Charges	257			34,373
Restructuring and Related Cost, Expected Cost Remaining	0
2014 Project [Member] \| Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	8,849
Restructuring Charges	(31)			8,880
Restructuring and Related Cost, Expected Cost Remaining	0
2014 Project [Member] \| Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	4,999
Restructuring Charges	1,070			$ 3,929
Restructuring and Related Cost, Expected Cost Remaining	$ 0

Restructuring Related Balance Sheet Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	$ 29,581
Costs incurred and charged to expense	49,090	$ (7,263)	$ 49,482
Cash payments	(20,841)
Non-cash items	7,188
Effect of change in exchange rates	(2,672)
Restructuring Reserve - Ending Balance	47,970	29,581
Employee severance costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	26,533
Costs incurred and charged to expense	39,943
Cash payments	(18,452)
Non-cash items	0
Effect of change in exchange rates	(2,656)
Restructuring Reserve - Ending Balance	45,368	26,533
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	0
Costs incurred and charged to expense	7,188
Cash payments	0
Non-cash items	7,188
Effect of change in exchange rates	0
Restructuring Reserve - Ending Balance	0	0
Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	3,048
Costs incurred and charged to expense	1,959
Cash payments	(2,389)
Non-cash items	0
Effect of change in exchange rates	(16)
Restructuring Reserve - Ending Balance	$ 2,602	$ 3,048

Restructuring Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended			15 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense	$ 49,090	$ (7,263)	$ 49,482
Restructuring Reserve, Current	26,200	25,200		$ 25,200
Restructuring Reserve, Noncurrent	21,800	$ 4,400		4,400
2014 Project [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	0
Costs incurred and charged to expense	$ 1,296			$ 47,182
2013 Project [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred and charged to expense					$ 26,200

Shareholders' Equity Preferred Stock Information (Details) - $ / shares shares in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued	0	0	0
Preferred stock, shares outstanding	0	0	0
Preferred Stock, No Par Value

Shareholders' Equity Share Repurchase Plan Information (Details) - USD ($) $ in Millions	10 Months Ended
	Dec. 31, 2015	Feb. 19, 2015
Share Repurchase Plan [Abstract]
Stock Repurchased and Retired During Period, Shares	743,444
Stock Repurchase Program, Authorized Amount		$ 50.0
Stock Repurchased and Retired During Period, Value	$ 25.0

Shareholders' Equity Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period	$ (200,607)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(28,720)	$ (65,547)	$ (113,756)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(229,327)	(200,607)
Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period	(200,607)	(135,060)	(21,304)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(30,848)	(69,245)	(115,565)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	2,128	3,698	1,809
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(28,720)	(65,547)	(113,756)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(229,327)	(200,607)	(135,060)
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period	(14,380)	(14,380)	(14,380)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(14,380)	(14,380)	(14,380)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period	318	(768)	(1,256)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(1,087)	76	(566)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	812	1,010	1,054
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(275)	1,086	488
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	43	318	(768)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period	(158,009)	(85,080)	4,217
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(23,570)	(73,891)	(89,297)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(1,407)	962	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(24,977)	(72,929)	(89,297)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	(182,986)	(158,009)	(85,080)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning of Period	(28,536)	(34,832)	(9,885)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(6,191)	4,570	(25,702)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	2,723	1,726	755
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(3,468)	6,296	(24,947)
Accumulated Other Comprehensive Income (Loss), Net of Tax, End of Period	$ (32,004)	$ (28,536)	$ (34,832)

Shareholders' Equity Schedule of Other Comprehensive Income (Loss) Tax Effect (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Before-tax amount [Abstract]
Foreign currency translation adjustment	$ (23,280)	$ (74,219)	$ (89,329)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax	(1,407)	962	0
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(1,768)	123	(915)
Net hedging (gain) loss reclassified into net income (loss)	1,322	1,639	1,704
Pension plan benefits liability adjustment	(3,504)	8,971	(25,270)
Total other comprehensive income (loss), before tax	(28,637)	(62,524)	(113,810)
Tax (provision) benefit [Abstract]
Foreign currency translation adjustment	(290)	328	32
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Tax	0	0	0
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	681	(47)	349
Net hedging (gain) loss reclassified into net income (loss)	(510)	(629)	(650)
Pension plan benefits liability adjustment	36	(2,675)	323
Total other comprehensive income (loss) tax (provision) benefit	(83)	(3,023)	54
Net-of-tax amount
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(23,570)	(73,891)	(89,297)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	(1,407)	962	0
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(1,087)	76	(566)
Net hedging (gain) loss reclassified into net income (loss)	812	1,010	1,054
Pension benefit obligation adjustment	(3,468)	6,296	(24,947)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (28,720)	$ (65,547)	$ (113,756)

Shareholders' Equity Accumulated OCI Reclassified to Statement of Operations (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]

Defined Benefit Plan, Amortization of Prior Service Cost (Credit)

$ (58)

$ (59)

$ (138)

Other Amounts Recognized in Other Comprehensive Income, before tax

(4)

(68)

Income (loss) before income taxes

84,627

37,102

(18,265)

Income Tax Expense (Benefit)

(49,574)

(22,099)

(4,035)

Net income (loss)

35,053

15,003

(22,300)

Total reclassifications for the period, net of tax

35,053

15,003

(22,300)

Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]

Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]

Defined Benefit Plan, Amortization of Prior Service Cost (Credit)

^[1],[2]

(58)

(59)

(138)

Defined Benefit Plan, Amortization of Gains (Losses)

^[1],[2]

(1,351)

(1,979)

(572)

Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements

^[1],[2]

(1,343)

(375)

(55)

Other Amounts Recognized in Other Comprehensive Income, before tax

^[1],[2]

(46)

Income (loss) before income taxes

^[1]

(2,752)

(2,459)

(765)

Income Tax Expense (Benefit)

^[1]

733

Net income (loss)

^[1]

(2,723)

(1,726)

(755)

Total reclassifications for the period, net of tax

^[1]

$ (2,723)

$ (1,726)

$ (755)

[1]	Amounts in parenthesis indicate debits to the Consolidated Statements of Operations.
[2]	These AOCI components are included in the computation of net periodic pension cost. Refer to Note 8 for additional details.

Fair Values of Financial Instruments Schedule of Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 133,565	$ 131,018	$ 112,371	$ 124,805
Line of Credit [Member]
Liabilities
Multicurrency revolving line of credit	97,167	151,837
Reported Value Measurement [Member]
Assets
Foreign exchange forward contracts	169	27
Cash and cash equivalents	133,565	131,018
Liabilities
Interest rate swaps, at fair value	934	868
Foreign exchange forwards, liability, at fair value	449	99
Reported Value Measurement [Member] \| Line of Credit [Member]
Liabilities
Multicurrency revolving line of credit	97,167	151,837
Reported Value Measurement [Member] \| USD Denominated Term Loan [Member]
Liabilities
Term loans	208,125	219,375
Estimate of Fair Value Measurement [Member]
Assets
Foreign exchange forward contracts	169	27
Cash and cash equivalents, at fair value	133,565	131,018
Liabilities
Interest rate swaps, at fair value	934	868
Foreign exchange forwards, liability, at fair value	449	99
Estimate of Fair Value Measurement [Member] \| Line of Credit [Member]
Liabilities
Multicurrency revolving line of credit, Fair Value of Amount Outstanding	95,906	150,570
Estimate of Fair Value Measurement [Member] \| USD Denominated Term Loan [Member]
Liabilities
Term loans, at fair value	205,676	217,830
Interest Rate Swap [Member] \| Reported Value Measurement [Member]
Assets
Derivative Asset, Noncurrent	1,830	1,632
Interest Rate Swap [Member] \| Estimate of Fair Value Measurement [Member]
Assets
Interest Rate Derivative Assets, at Fair Value	1,830	1,632
Interest Rate Cap [Member] \| Reported Value Measurement [Member]
Assets
Derivative Asset, Noncurrent	946	1,423
Interest Rate Cap [Member] \| Estimate of Fair Value Measurement [Member]
Assets
Interest Rate Derivative Assets, at Fair Value	$ 946	$ 1,423

Segment Information Information By Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenues	$ 495,713	$ 506,859	$ 513,024	$ 497,590	$ 496,448	$ 469,528	$ 470,811	$ 446,746	$ 2,013,186	$ 1,883,533	$ 1,947,616
Gross Profit	$ 156,663	$ 170,749	$ 169,705	$ 163,203	$ 152,419	$ 147,290	$ 118,554	$ 138,422	660,320	556,685	614,050
Operating Income (Loss)									96,211	52,846	480
Total other income (expense)									(11,584)	(15,744)	(18,745)
Income (loss) before income taxes									84,627	37,102	(18,265)
Depreciation and amortization									68,318	75,993	98,139
Electricity Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues									938,374	820,306	771,857
Gross Profit									282,677	225,446	200,249
Operating Income (Loss)									68,287	31,104	(77,751)
Depreciation and amortization									28,468	35,896	47,889
Gas Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues									569,476	543,805	599,091
Gross Profit									205,063	185,559	211,623
Operating Income (Loss)									66,813	67,471	76,101
Depreciation and amortization									20,714	20,288	25,706
Water Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues									505,336	519,422	576,668
Gross Profit									172,580	145,680	202,178
Operating Income (Loss)									37,266	19,864	71,356
Depreciation and amortization									18,675	19,459	24,257
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)									(76,155)	(65,593)	(69,226)
Depreciation and amortization									$ 461	$ 350	$ 287

Segment Information Revenues By Region (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers [Line Items]
Total revenues	$ 495,713	$ 506,859	$ 513,024	$ 497,590	$ 496,448	$ 469,528	$ 470,811	$ 446,746	$ 2,013,186	$ 1,883,533	$ 1,947,616
United States and Canada [Member]
Revenues from External Customers [Line Items]
Total revenues									1,126,787	997,293	875,796
EMEA [Member]
Revenues from External Customers [Line Items]
Total revenues									698,106	701,301	849,841
Other Countries [Member]
Revenues from External Customers [Line Items]
Total revenues									$ 188,293	$ 184,939	$ 221,979

Segment Information Major Customers (Details)	12 Months Ended
Segment Information Major Customers (Details)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue, Major Customer [Line Items]
Segment Reporting, Disclosure of Major Customers	For the years ended December 31, 2016, 2015, and 2014, no single customer represented more than 10% of total Company or the Gas or Water operating segment revenues. Two customers represented 12% and 10% of total Electricity revenue, respectively, for the year ended December 31, 2016. No customer represented more than 10% of Electricity revenue for the years ended December 31, 2015 and 2014.
Sales [Member] \| Threshold for Reporting Customer Concentration [Member]
Revenue, Major Customer [Line Items]
Percentage of total company revenue represented by one customer	10.00%	10.00%	10.00%
Sales [Member] \| Customer A [Member] \| Electricity Operating Segment [Member]
Revenue, Major Customer [Line Items]
Percentage of total company revenue represented by one customer	12.00%
Sales [Member] \| Customer B [Member] \| Electricity Operating Segment [Member]
Revenue, Major Customer [Line Items]
Percentage of total company revenue represented by one customer	10.00%

Property, Plant, and Equipment By Location (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Property, Plant, and Equipment by Location
Property, plant, and equipment, net	$ 176,458	$ 190,256
UNITED STATES [Member]
Schedule of Property, Plant, and Equipment by Location
Property, plant, and equipment, net	70,435	72,179
Outside United States [Member]
Schedule of Property, Plant, and Equipment by Location
Property, plant, and equipment, net	$ 106,023	$ 118,077

Segment Information Segment Results Narrative (Details) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares	Sep. 30, 2016 USD ($) $ / shares	Jun. 30, 2016 USD ($) $ / shares	Mar. 31, 2016 USD ($) $ / shares	Dec. 31, 2014 USD ($) $ / shares	Sep. 30, 2014 USD ($) $ / shares	Jun. 30, 2014 USD ($) $ / shares	Mar. 31, 2014 USD ($) $ / shares	Dec. 31, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2014 USD ($) $ / shares
Segment Reporting Information [Line Items]
Gross Profit \| $	$ 156,663	$ 170,749	$ 169,705	$ 163,203	$ 152,419	$ 147,290	$ 118,554	$ 138,422	$ 660,320	$ 556,685	$ 614,050
Earnings (loss) per common share - Basic	$ 0.30	$ (0.26)	$ 0.52	$ 0.27	$ 0.23	$ 0.33	$ (0.37)	$ 0.14	$ 0.83	$ 0.33	$ (0.60)
Earnings (loss) per common share - Diluted	$ 0.30	$ (0.26)	$ 0.52	$ 0.26	$ 0.23	$ 0.33	$ (0.37)	$ 0.14	$ 0.82	$ 0.33	$ (0.60)
Number of Operating Segments									3	3	3
Water Operating Segment [Member]
Segment Reporting Information [Line Items]
Gross Profit \| $									$ 172,580	$ 145,680	$ 202,178
Electricity Operating Segment [Member]
Segment Reporting Information [Line Items]
Gross Profit \| $									$ 282,677	225,446	200,249
Customers purchasing certain communication modules manufactured between July 2013 and December 2014 [Domain] \| Water Operating Segment [Member] \| Warranty Obligations [Member]
Segment Reporting Information [Line Items]
Warranty charge \| $										$ 29,400
Earnings (loss) per common share - Basic										$ (0.47)
Earnings (loss) per common share - Diluted										$ (0.47)
OpenWay project in North America [Member] \| Electricity Operating Segment [Member] \| Contracts Accounted for under Percentage of Completion [Member]
Segment Reporting Information [Line Items]
Gross Profit \| $											$ 15,900
Earnings (loss) per common share - Basic											$ (0.25)
Earnings (loss) per common share - Diluted											$ (0.25)
Sales [Member] \| Customer A [Member] \| Electricity Operating Segment [Member]
Segment Reporting Information [Line Items]
Percentage of total company revenue represented by one customer									12.00%
Sales [Member] \| Customer B [Member] \| Electricity Operating Segment [Member]
Segment Reporting Information [Line Items]
Percentage of total company revenue represented by one customer									10.00%

Quarterly Results (Unaudited) Quarterly Results Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Results [Line Items]
Revenues	$ 495,713	$ 506,859	$ 513,024	$ 497,590			$ 496,448	$ 469,528	$ 470,811	$ 446,746	$ 2,013,186	$ 1,883,533	$ 1,947,616
Gross Profit	156,663	170,749	169,705	163,203			152,419	147,290	118,554	138,422	660,320	556,685	614,050
Net Income (Loss) Attributable to Parent	$ 11,649	$ (9,885)	$ 19,917	$ 10,089			$ 8,986	$ 12,640	$ (14,346)	$ 5,398	$ 31,770	$ 12,678	$ (23,670)
Earnings (loss) per common share - Basic	$ 0.30	$ (0.26)	$ 0.52	$ 0.27			$ 0.23	$ 0.33	$ (0.37)	$ 0.14	$ 0.83	$ 0.33	$ (0.60)
Earnings (loss) per common share - Diluted	$ 0.30	$ (0.26)	$ 0.52	$ 0.26			$ 0.23	$ 0.33	$ (0.37)	$ 0.14	$ 0.82	$ 0.33	$ (0.60)
Restructuring Charges											$ 49,090	$ (7,263)	$ 49,482
Quarterly Financial Information, Quarterly Charges and Credits, Amount Affecting Comparability					$ 13,300
Warranty Expense											13,920	45,984	9,238
2016 Projects [Member]
Quarterly Results [Line Items]
Restructuring Charges	$ 7,800	$ 40,000									47,794
Water Operating Segment [Member]
Quarterly Results [Line Items]
Revenues											505,336	519,422	576,668
Gross Profit											172,580	$ 145,680	$ 202,178
Warranty Expense						$ 23,600
Water Operating Segment [Member] \| 2016 Projects [Member]
Quarterly Results [Line Items]
Restructuring Charges											$ 13,061

Subsequent Events (Details) - USD ($) $ in Millions	Feb. 23, 2017	Feb. 19, 2015
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount		$ 50
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount	$ 50

Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Other Adjustments	$ 60	$ 1,025
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of Period	235,339	257,728	$ 162,588
Other Adjustments	(12,419)	(62,791)	(4,913)
Additions Charged to Cost and Expense	26,640	40,402	100,053
Balance at End of Period Noncurrent	$ 249,560	$ 235,339	$ 257,728