Earnings Per Share and Capital Structure [Abstract] Earnings Per Share and Capital Structure [Abstract] Computation of Basic and Diluted Earnings Per Share [Table] Schedule of Basic and Diluted Earnings Per Share [Table] Computation of Basic and Diluted Earnings Per Share [Table] Class of Stock [Axis] Class of Stock [Domain] Statement [Line Items] Net income (loss) available to common shareholders Net Income (Loss) Attributable to Parent Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic Dilutive effect of convertible notes Incremental Common Shares Attributable to Conversion of Debt Securities Dilutive effect of stock-based awards Incremental Common Shares Attributable to Share-based Payment Arrangements Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted Earnings (loss) per common share-Basic Earnings Per Share, Basic Earnings (loss) per common share-Diluted Earnings Per Share, Diluted Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] Fair Values of Financial Instruments [Text Block] Fair Value Disclosures [Text Block] Intangible Assets [Abstract] Intangible Assets [Abstract] Schedule of Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets by Major Class [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Core Developed Technology [Member] Core Developed Technology [Member] Customer Contracts And Relationships [Member] Customer Contracts And Relationships [Member] Trade Marks And Trade Names [Member] Trade Marks And Trade Names [Member] Other Intangible Assets [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Gross Assets Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Finite-Lived Intangible Assets, Net Schedule of Debt [Abstract] Schedule of Debt [Abstract] Schedule of Debt [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Subordinated Borrowing, Name [Domain] 2007 Senior Secured Credit Facility [Member] 2007 Senior Secured Credit Facility [Member] 2011 Senior Secured Credit Facility [Member] 2011 Senior Secured Credit Facility [Member] Senior Subordinated Notes [Member] Long-term Debt, Type [Axis] Term Loans [Domain] Long-term Debt, Type [Domain] USD Denominated Term Loan [Member] USD Denominated Term Loan [Member] EUR Denominated Term Loan [Member] EUR Denominated Term Loan [Member] Convertible Subordinated Debt [Member] Line of Credit Facility [Axis] Line Of Credit Facility, Borrower [Domain] Line Of Credit Facility, Borrower [Domain] Line of Credit [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Long-term Debt Current portion of long term debt Long-term Debt, Current Maturities Long-term debt Long-term Debt, Excluding Current Maturities Inventory, Net [Abstract] Inventories [Table] Schedule of Inventory, Current [Table] Schedule of Inventory, Current [Table] Inventories [Axis] Schedule of Inventory, Current [Axis] Schedule of Inventory, Current [Axis] Inventories [Domain] Schedule of Inventory, Current [Member] Schedule of Inventory, Current [Domain] Inventories [Member] Inventories [Line Items] Schedule of Inventory, Current [Line Items] Schedule of Inventory, Current [Line Items] Materials Inventory, Raw Materials Work in process Inventory, Work in Process Finished goods Inventory, Finished Goods Total inventories Inventory, Net Stock Based Compensation [Abstract] Stock-Based Compensation [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Employee Stock Option [Member] [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Outstanding, beginning balance, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding, beginning balance, Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding, beginning balance, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Outstanding, beginning balance, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Granted, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Granted, Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Granted, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Exercised, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised, Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Exercised, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value Forfeited, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Forfeited, Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Expired, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Expired, Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Outstanding, ending balance, Number Outstanding, ending balance, Weighted Average Exercise Price Per Share Outstanding, ending balance, Weighted Average Remaining Contractual Term Outstanding, ending balance, Aggregate Intrinsic Value Vested and Expected to Vest, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Vested and Expected to Vest, Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Vested and Expected to Vest, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Vested and Expected to Vest, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Exercisable, Weighted Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Exercisable, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Exercisable, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Other Comprehensive Income (Loss) [Abstract] Other Comprehensive Income (Loss) [Abstract] Statement [Table] Statement [Table] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Net income (loss) Foreign currency translation adjustment, net Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges, net Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Net unrealized gain (loss) on a nonderivative net investment hedging instrument, net Net Unrealized Gain (Loss) On Nonderivative Net Investment Hedging Instrument Net Net Unrealized Gain (Loss) On Nonderivative Net Investment Hedging Instrument Net Of Tax Net hedging (gain) loss reclassified into net income (loss), net Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax Pension plan benefits liability adjustment, net Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Income Tax (Provision) Benefit Related To OCI (Abstract) Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Net unrealized gain (loss) on derivative instruments designated as cash flow hedges Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect Net unrealized gain (loss) on a nonderivative net investment hedging instrument Net Unrealized Gain (Loss) On Nonderivative Net Investment Hedging Instrument Tax Tax effect on net unrealized gain (loss) on foreign currency denominated loan designated as a hedge of a net investment in international operations. Net hedging (gain) loss reclassified into net income (loss) Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax Pension plan benefits liability adjustment Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax Total income tax (provision) benefit on other comprehensive income (loss) Other Comprehensive Income (Loss), Tax Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated other comprehensive income (loss), net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Commitments and Contingencies [Abstract] Commitments and Contingencies [Abstract] Summary of the Warranty Accrual Account Activity [Table] Summary of the Warranty Accrual Account Activity [Table] Summary of the Warranty Accrual Account Activity [Table] Legal Entity [Axis] Entity [Domain] WarrantiesActivity [Line Items] WarrantiesActivity [Line Items] Beginning balance Warranty Accrual Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated warranty claims based on historical and projected product performance trends and costs. New product warranties Standard Product Warranty Accrual, Warranties Issued Other changes/adjustments to warranties Warranty Changes and Adjustments Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting product warranties (including adjustments for changes in estimates). Reclassificaiton from other current liabilities Reclassificaiton from other current liabilities Reclassificaiton from other current liabilities Claims activity Claims activity Represents the aggregate decrease in the liability related to payments to satisfy claims for product warranties. Effect of change in exchange rates Effect of change in exchange rates Warranty Total Increase or Decrease in the warranty liability due to currency translation. Ending balance Less: current portion of warranty Current portion of warranty Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated warranty claims based on historical and projected product performance trends and costs. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle, if longer). Long-term warranty Warranty Noncurrent Carrying value as of the balance sheet date of obligations incurred through that date and due after one year for estimated warranty claims based on historical and projected product performance trends and costs. Income Taxes [Abstract] Income Taxes [Abstract] Net Interest And Penalties [Table Text Block] Interest Expense And Penalties Related To Unrecognized Tax Liabilities And Interest Income On Tax Overpayments As Components Of Income Tax Expense [Table Text Block] Interest Expense And Penalties Related To Unrecognized Tax Liabilities And Interest Income On Tax Overpayments As Components Of Income Tax Expense [Table Text Block] Accrued Interest And Penalties [Table Text Block] Accrued Interest And Penalties [Table Text Block] Accrued Interest And Penalties [Table Text Block] Unrecognized Tax Benefits Related To Uncertain Tax Positions [Table Text Block] Summary of Income Tax Contingencies [Table Text Block] Earnings Per Share [Abstract] Earnings Per Share and Capital Structure [Text Block] Earnings Per Share [Text Block] Restructuring [Abstract] Restructuring [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Statement, Business Segments [Axis] Statement, Business Segments [Axis] Segment [Domain] Segment [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Restructuring Cost and Reserve [Axis] Restructuring Cost and Reserve [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Severance Costs Severance Costs Derivative Financial Instruments [Abstract] Derivative Financial Instruments [Abstract] Net unrealized loss on hedging instruments at beginning Net unrealized loss on hedging instruments Net accumulated unrealized gain (loss) of hedging instruments, net of tax, included in Accumulated Other Comprehensive Income on the balance sheet. Unrealized gain (loss) on derivative instruments Unrealized gain (loss) on a nonderivative net investment hedging instrument Realized (gains) losses reclassified into net income (loss) Net unrealized loss on hedging instruments at end Consigned Inventory [Abstract] Consigned Inventory [Abstract] Consigned Inventory [Table] Consigned Inventory [Table] Consigned Inventory is inventory held at third-party locations, however, title is maintained by the company. [Table] Consigned Inventory [Axis] Consigned Inventory [Axis] Consigned Inventory [Domain] Consigned Inventory [Member] Consigned Inventory [Domain] Consigned inventory [Line Items] Consigned inventory [Line Items] Consigned Inventory Other Inventory, Materials, Supplies and Merchandise under Consignment Itron International [Member] Itron International [Member] Statement [Line Items] Reduction in YTD Q3 2010 revenue due to restatement Restatement of Prior Year Income, Gross Impact of Restatement on Earnings Per Share, Diluted Impact of Restatement on Earnings Per Share, Diluted Recovery Associated With Settlement Of Product Claims Recovery Associated With Settlement Of Product Claims Recovery from a third party associated with settlement of product claims. Warranty charge Warranty charge This tag is used to for specific cases of warranty charges disclosed. This is a subset of the tag itri_WarrantyChangesAndAdjustments, which is defined as "Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting product warranties (including adjustments for changes in estimates)." Schedule of Net Periodic Pension Benefit Costs [Abstract] Schedule of Net Periodic Pension Benefit Costs [Abstract] Schedule of Net Periodic Pension Benefit Costs [Table] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Net Periodic Pension Benefit Costs [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis] Schedule of Net Periodic Pension Benefit Costs [Domain] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Schedule of Net Periodic Pension Benefit Costs [Member] Pension Plans, Defined Benefit [Member] Schedule of Net Periodic Pension Benefit Costs [Line Items] Defined Benefit Plan Disclosure [Line Items] Service Cost Defined Benefit Plan, Service Cost Interest Cost Defined Benefit Plan, Interest Cost Expected Return on Plan Assets Defined Benefit Plan, Expected Return on Plan Assets Amortization of Actuarial Net Loss (Gains) Defined Benefit Plan, Amortization of Net Gains (Losses) Amortization of Unrecognized Prior Service Costs Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Net Periodic Benefit Cost Defined Benefit Plan, Net Periodic Benefit Cost Balance Sheet Related Disclosures [Abstract] Certain Balance Sheet Components [Text Block] Supplemental Balance Sheet Disclosures [Text Block] Employee Stock [Member] Shares of stock sold to employees Stock Issued During Period, Shares, Employee Stock Purchase Plans Weighted average fair value per ESPP award Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Beginning balanace Extended Warranties Unearned Revenue Amount as of the balance sheet date of unearned revenue for extended warranty contracts. Unearned revenue for new extended warranties Extended Warranties Unearned Revenue New Represents the aggregate increase in the deferred revenue liability for accruals related to new extended product warranties issued during the reporting period. Unearned revenue recognized Recognition of Deferred Revenue Ending balance Extended Warranties Unearned Revenue Current Extended Warranties Unearned Revenue Current The current portion of the amount as of the balance sheet date of unearned revenue for extended warranty contracts. Long-term unearned revenue for extended warranty within Other long-term obligations Extended Warranties Unearned Revenue Noncurrent The long-term portion of the amount as of the balance sheet date of unearned revenue for extended warranty contracts. Derivative [Table] Derivative [Table] Derivative, by Nature [Axis] Derivative, Name [Domain] Euro Term Loan Interest Rate Swap [Member] Euro Term Loan Interest Rate Swap [Member] USD Term Loan Interest Rate Swap June 2011 A [Member] One year USD Term Loan interest rate swap that expired on June 2011 - A [Member] USD Term Loan Interest Rate Swap June 2011 B [Member] One year USD Term Loan interest rate swap that expired on June 2011 - B [Member] Range [Axis] Range [Domain] Minimum [Member] Maximum [Member] Number of USD Term Loan Interest Rate Derivatives Expired Number of Interest Rate Derivatives Expired The number of interest rate swap contracts that expired as of the balance sheet date. Pay fixed interest rate in interst rate swap Derivative, Fixed Interest Rate Percentage rate above EURIBOR receive on interest rate swap Derivative, Basis Spread on Variable Rate Derivative, Description of Variable Rate Basis Derivative, Description of Variable Rate Basis Notional amount of interest rate swaps Notional Amount of Interest Rate Derivatives Notional amount of Euro denominated term loan Secured Debt Number of foreign exchange forward contracts entered into YTD Number Of Foreign Exchange Forward Contracts Number of foreign exchange forward contracts entered into during the reporting period. Notional amount of foreign currency forward contracts Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Cash Payment to Terminate Interest Rate Swap Cash Payment to Terminate Interest Rate Swap Cash Payment to Terminate Interest Rate Swap Consolidated Balance Sheet Restatement [Abstract] Consolidated Balance Sheet Restatement [Abstract] Consolidated Balance Sheet Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] As Previously Reported [Axis] As Previously Reported [Domain] As previously reported [Member] Scenario, Previously Reported [Member] As restated [Member] As restated [Member] As restated [Member] Consolidated Balance Sheet Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Accounts receivable, net Accounts Receivable, Net, Current Deferred tax assets noncurrent, net Deferred Tax Assets, Net, Noncurrent Long-term warranty Long Term Warranty Carrying value as of the balance sheet date of obligations incurred through that date and due after one year for estimated warranty claims based on historical and projected product performance trends and costs. Other long-term obligations Other Liabilities, Noncurrent Accumulated other comprehensive loss, net Retained earnings Retained Earnings (Accumulated Deficit) Goodwill Excluding Non Goodwill Intangibles [Abstract] Goodwill, excluding non-goodwill intangible assets [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Schedule of Goodwill [Table Text Block] Schedule of Goodwill [Table Text Block] Schedule of Goodwill Impairment [Table Text Block] Schedule of Goodwill Impairment [Table Text Block] Schedule of Goodwill Impairment [Table Text Block] Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets [Text Block] Intangible Assets Disclosure [Text Block] Summary Of The Intangible Asset Account Activity [Table] Summary Of The Intangible Asset Account Activity [Table] Summary Of The Intangible Asset Account Activity [Table] Parent [Member] Beginning balance, intangible assets, gross Intangible assets acquired Intangible Assets Acquired During Period Intangible Assets Acquired During Period Assets no longer in use written off Intangible Asset No Longer In Use Written Off Intangible Asset No Longer In Use Written Off During the Period Effect of change In exchange rates Effect Of Change In Exchange Rates Intangible Asset Effect Of Change In Exchange Rates - Intangible Asset Activity Table Only Ending balance, intangible assets, gross Intangible Assets, Explanation of Significant Deletions Intangible Assets, Explanation of Significant Deletions Defined Benefit Pension Plans [Abstract] Defined Benefit Pension Plans [Abstract] Schedule of Amounts Recognized in the Consolidated Balance Sheets [Table Text Block] Schedule of Amounts Recognized in Balance Sheet [Table Text Block] Schedule of Net Periodic Pension Benefit Costs [Table Text Block] Schedule of Net Benefit Costs [Table Text Block] Schedule of Fair Value of Financial Instruments on the Consolidated Balance Sheets [Abstract] Schedule of Fair Value of Financial Instruments on the Consolidated Balance Sheets [Abstract] Schedule of Fair Values Of Financial Instruments by Balance Sheet Grouping [Table Text Block] Fair Value, by Balance Sheet Grouping [Table Text Block] Stock Based Compensation [Abstract] [Abstract] Stock-Based Compensation [Abstract] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Stock Incentive Plan [Member] 2010 Stock Incentive Plan, which consist of stock options, restricted stock units, and unrestricted stock awards. (Member) Restricted Stock Units (RSUs) [Member] Long Term Performance Restricted Stock Award [Member] Restricted stock awards granted during the year related to the Long Term Performance Plan (LTPP), which may only become eligible for vesting as of December 31 of year, upon satisfaction of the attached performance condition. [Line Items] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Number of shares authorized for issuance under the Stock Incentive Plan Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Number of shares available for future grant under the Stock Incentive Plan Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Award vesting rights Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights Unrecognized compensation expense Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized Unrecognized compensation expense, Expected weighted average period for recognition Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Maximum number of RSUs that may become eligible for vesting related to performance awards granted in the year Restricted Awards Eligible For Vesting The maximum number of the annual restricted awards that may become eligible for vesting pending the satisfaction of performance conditions. Granted, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value ESPP, percentage discount from market price on purchase date Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date ESPP, maximum percentage of employee salary eligible for participation Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate Shares available for future issuance under the ESPP Shares available for issuance employee stock purchase plan The number of shares of common stock available for future issuance under the employee stock purchase plan as of the balance sheet date. Stock Options Expiration Period Stock Options Expiration Period Stock Options Expiration Period in Years from Grant Date Property, Plant, and Equipment Policy Additional Information [Abstract] Property, Plant, and Equipment Policy Additional Information [Abstract] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment by Type [Axis] Property, Plant and Equipment, Type [Domain] Building and Building Improvements [Member] Machinery and equipment, computers and purchased software, and furniture [Member] Machinery and equipment, computers and purchased software, and furniture [Member] Long Lived Assets Held-for-sale by Asset Type [Axis] Long Lived Assets Held-for-sale by Asset Type [Axis] Long Lived Assets Held-for-sale, Name [Domain] Long Lived Assets Held-for-sale, Name [Domain] Assets Held-for-sale [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Useful Life, Average Property, Plant and Equipment, Useful Life, Minimum Property, Plant and Equipment, Useful Life, Maximum Assets Held-for-sale, at Carrying Value Carrying Amount of Debt and Equity Components [Abstract] Carrying Amount of Debt and Equity Components [Abstract] Schedule of Long-term Debt Instruments [Table] Fair value of convertible notes Convertible Debt, Fair Value Disclosures Unamortized discount Debt Instrument, Unamortized Discount Net carrying amount of debt component Convertible Subordinated Debt Carrying amount of equity component Debt Instrument, Convertible, Carrying Amount of Equity Component Share-based Compensation, Allocation and Classification in Financial Statements [Abstract] Stock-Based Compensation [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Long-Term Debt Repayments [Abstract] Schedule of Long-Term Debt Repayments [Abstract] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Secured Debt [Member] Secured Debt [Member] Debt Instrument [Axis] Debt Instrument, Name [Domain] Credit Facilities [Member] Credit facility consisting of a U.S. dollar term loan facility and a multicurrency revolving credit facility. Repayments of Long-term Debt Repayments of Long-term Debt Income Tax Disclosure [Abstract] Income Taxes [Text Block] Income Tax Disclosure [Text Block] Segment Information [Abstract] Segment Information [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Itron North America [Member] Itron North America [Member] Corporate Unallocated [Member] Unallocated Amount to Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revenues Revenue, Net Gross profit Gross Profit Operating Income (Loss) Operating Income (Loss) Total other income (expense) Nonoperating Income (Expense) Income (Loss) Before Income Taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Depreciation and amortization Depreciation, Depletion and Amortization Goodwill Impairment Goodwill, Impairment Loss Computation of Basic and Diluted Earnings Per Share [Table Text Block] Schedule of Earnings Per Share Reconciliation [Table Text Block] Revenues Gross Profit And Operating Income By Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Revenues By Region [Table Text Block] Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Depreciation And Amortization Expense Associated With Segments [Table Text Block] Depreciation And Amortization Expense Associated With Segments [Table Text Block] Depreciation And Amortization Expense Associated With Segments [Table Text Block] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency, Nature [Domain] Vendor Supplied Component Warranty Expense Type [Member] Vendor Supplied Component Warranty Expense Type [Member] Warranty Expense Warranty Expense The expense charged against earnings for the period pertaining to warranties on the entity's goods and services granted to customers. Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Stock-based awards excluded from diluted EPS calculation (antidilutive) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Pension and Other Postretirement Benefit Contributions [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Employer Contributions [Axis] Employer Contributions [Domain] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan, Contributions by Employer Defined Benefit Plan, Contributions by Employer Estimated Future Employer Contributions in Current Fiscal Year Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year Unrestricted Stock Award [Member] Unrestricted stock awards issued to the Board of Directors as part of their compensation. Shares of unrestricted stock issued Stock Issued During Period, Shares, Share-based Compensation, Gross Weighted average grant date fair value Statement of Financial Position [Abstract] Statement, Scenario [Axis] Scenario, Unspecified [Domain] ASSETS Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Inventories Deferred tax assets current, net Deferred Tax Assets, Net, Current Other current assets Other Assets, Current Total current assets Assets, Current Property, plant, and equipment, net Property, Plant and Equipment, Net Other long-term assets Other Assets, Noncurrent Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Goodwill Goodwill Total assets Assets LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Equity [Abstract] Accounts payable Accounts Payable, Current Other current liabilities Other Liabilities, Current Wages and benefits payable Employee-related Liabilities, Current Taxes payable Taxes Payable, Current Current portion of debt Current portion of warranty Unearned revenue Deferred Revenue, Current Deferred tax liabilities current, net Deferred Tax Liabilities, Current Total current liabilities Liabilities, Current Pension plan benefit liability Defined Benefit Pension Plan, Liabilities, Noncurrent Deferred tax liabilities noncurrent, net Deferred Tax Liabilities, Noncurrent Total liabilities Liabilities Commitments and Contingencies Commitments and Contingencies Shareholders' equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock Preferred Stock, Value, Issued Common stock Common Stock, Value, Issued Accumulated other comprehensive income (loss), net (Accumulated deficit) retained earnings Total shareholders' equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders' equity Liabilities and Equity Accounts Receivable, Net [Abstract] Accounts Receivable, Net [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts Receivable, Net [Axis] Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] Accounts Receivable, Net [Domain] Receivable Type [Domain] Accounts Receivable [Member] Accounts Receivable, Net (Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Trade receivables, net of allowance Trade Receivables, Net of Allowances Trade receivables for amounts due from customers or clients, within one year of the balance sheet date for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Unbilled receivables Unbilled receivables The amount due for services rendered or products shipped and recognized as revenue in conformity with revenue recognition criteria, but not yet billed. Total accounts receivable, net Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Schedule of Interest Expense On Liability Components [Abstract] Schedule of Interest Expense On Liability Components [Abstract] Convertible Subordinated Debt [Axis] Convertible Subordinated Debt [Domain] Contractual interest coupon Interest Expense Related To Contractual Interest Coupon [Abstract] The amount of contractual interest expense on convertible senior subordinated notes recorded in the Statement of Operations during the period. [Abstract] Amortization of the discount on the liability component Amortization of Debt Discount (Premium) Total interest expense on convertible notes Interest Expense, Debt Credit Facility Additional Information [Abstract] Credit Facility Additional Information [Abstract] Interest Rate, Type [Axis] Interest Rate, Type [Axis] Interest Rate, Type [Domain] Interest Rate, Type [Domain] LIBOR interest rate [Member] LIBOR interest rate [Member] U.S. Prime rate [Member] U.S. Prime rate [Member] Subordinated Borrowing, Name [Domain] U.S. Domestic Subsidiaries [Member] U.S. Domestic Subsidiaries [Member] First-Tier Foreign Subsidiaries [Member] First-Tier Foreign Subsidiaries [Member] Scheduled Quarterly Repayments September 2011 through June 2013 [Domain] Scheduled Quarterly Repayments September 2011 through June 2013 [Domain] Scheduled Quarterly Repayments September 2013 through June 2014 [Domain] Scheduled Quarterly Repayments September 2013 through June 2014 [Domain] Scheduled Quarterly Repayments September 2014 through June 2016 [Domain] Scheduled Quarterly Repayments September 2014 through June 2016 [Domain] Voting Stock [Member] Voting Stock [Member] Non-voting Stock [Member] Non-voting Stock [Member] Common Stock [Member] Long-term Debt Debt Instrument, Face Amount Debt Instrument, Face Amount Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pledge of Capital Stock Pledge of Capital Stock The percentage of the pledged capital stock as security for the payment and performance in full of all obligations to a creditor. The pledge effectively gives the creditor a lien on the security interest of the pledged capital stock. Repayments of Secured Debt Repayments of Secured Debt Line of credit facility, amount outstanding Line of Credit Facility, Amount Outstanding Letters of Credit Outstanding, Amount Letters of Credit Outstanding, Amount Debt Instrument, Interest Rate at Period End Debt Instrument, Interest Rate at Period End Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Write off of Deferred Debt Issuance Cost Write off of Deferred Debt Issuance Cost Prepaid Debt Fees Noncurrent Prepaid Debt Fees Noncurrent Prepaid debt fees represent the capitalized direct costs incurred related to the issuance of debt. These costs are amortized to interest expense over the lives of the respective borrowings using the effective interest method. When debt is repaid early, or first becomes convertible the related portion of unamortized prepaid debt fees is written-off and included in interest expense. Stock-Based Compensation Expense and Related Tax Benefit [Table Text Block] Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Stock Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Employee Stock Options Activity [Table Text Block] Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Restricted Stock Units Award Activity [Table Text Block] Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Nonrestricted Stock Awards Activity [Table Text Block] Schedule of Share-based Compensation, Nonemployee Director Stock Award Plan, Activity [Table Text Block] Employee Stock Purchase Plan (ESPP) Activity [Table Text Block] Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block] Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract] Schedule of Amounts Recognized in the Consolidated Balance Sheets [Table] Schedule of Amounts Recognized in the Consolidated Balance Sheets [Axis] Schedule of Amounts Recognized in the Consolidated Balance Sheets [Domain] Schedule of Amounts Recognized in the Consolidated Balance Sheets [Line Items] Plan Assets in Other Long Term Assets Defined Benefit Plan, Assets for Plan Benefits, Noncurrent Current Portion of Pension Plan Liability in Wages and Benefits Payable Defined Benefit Pension Plan Liabilities, Current Long-term portion of pension plan liability Net Penison Plan Benefit Liability Defined Benefit Plan, Amounts Recognized in Balance Sheet Total Company [Member] Total Company [Member] Goodwill beginning balance Goodwill acquired Goodwill, Acquired During Period Effect of change in exchange rates Goodwill, Translation Adjustments Goodwill ending balance Revenues by Region Schedule of Revenues from External Customers and Long-Lived Assets [Table] Statement, Geographical [Axis] Statement, Geographical [Axis] Segment, Geographical [Domain] Geographical Intersegment, Eliminations [Member] United States and Canada (Member) Segment, Geographical, Groups of Countries, Group One [Member] Europe (Member) Segment, Geographical, Groups of Countries, Group Two [Member] Other Countries [Member] OtherCountries [Member] The combined total of all countries outside of the USA, Canada, and Europe, for the purpose of reporting revenue by region. [Member] Revenues from External Customers [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Revenues Revenues Deferred Revenue [Abstract] Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement Type [Axis] Deferred Revenue Arrangement Type [Domain] Deferred Revenue Arrangement [Line Items] Deferred Revenue Deferred Revenue Deferred Costs Deferred Costs Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Global manufacturing locations [Member] Global manufacturing locations to be impacted by restructuring. [Member] Expected number of manufacturing facilities that will be closed or sold due to restructuring. [Member] Expected number of manufacturing facilities that will be closed or sold due to restructuring. [Member] Recorded in Q4 2011 [Member] Restructuring charges expected to be recorded in Q4 2011 [Member] Recorded in 2012 [Member] Restructuring charges expected to be recorded in 2012 [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Total number of manufacturing locations Total number of manufacturing locations Total number of manufacturing locations. Percentage Of Manufacturing Facilities Impacted By Restructuring Percentage Of Manufacturing Facilities Impacted By Restructuring Number Of Manufacturing Locations Impacted By Restructuring Number Of Manufacturing Locations Impacted By Restructuring Number Of Manufacturing Locations Impacted By Restructuring Restructuring and related costs, expected percentage of positions eliminated Restructuring and related costs, expected percentage of positions eliminated The expected number of positions eliminated during the period as a percentage of total positions in connection with the restructuring plan. Restructuring and Related Cost, Expected Cost Restructuring and Related Cost, Expected Cost Expected Period Restructuring Charges Will Be Recognized Expected Period Restructuring Charges Will Be Recognized Expected Period Restructuring Charges Will Be Recognized Percentage of restructuring costs related to closing or consolidating manufacturing and non-manufacturing operations Percentage of restructuring costs related to closing or consolidating manufacturing and non-manufacturing operations Percentage of restructuring costs related to closing or consolidating manufacturing and non-manufacturing operations. Percentage of expected restructuring charges associated with severance costs. Percentage of expected restructuring charges associated with severance costs. Percentage of expected restructuring charges associated with severance costs. Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Stock repurchase program authorization period. Stock repurchase program authorization period. Stock repurchase program authorization period. Effect of Net Investment Hedge Nonderivative on the Balance Sheet and Income Statement (Table) Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) by Hedging Relationship [Axis] Derivative Instruments, Gain (Loss) by Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Net Investment Hedging [Member] Net Investment Hedging [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Gain (loss) recognized in OCI on derivative, (Effective Portion) [Abstract] Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net [Abstract] Before tax Net Unrealized Gain (Loss) On Nonderivative Net Investment Hedging Instrument Before Tax Net Unrealized Gain (Loss) On Nonderivative Net Investment Hedging Instrument Before Tax After tax Property, Plant and Equipment, Net [Abstract] Schedule of Property, Plant and Equipment [Table] Property, plant and equipment, net [Member] Property, plant and equipment, net [Member] Property, Plant and Equipment [Line Items] Machinery and equipment Machinery and Equipment, Gross Computers and purchased software Computers and purchased software Carrying amount as of the balance sheet date of computers and purchased software. Buildings, furniture, and improvements Buildings, furniture, and improvements Carrying amount as of the balance sheet date of building, furniture, an improvements. Land Land Construction in progress, including purchased equipment Construction in Progress, Gross Total cost Property, Plant and Equipment, Gross Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, plant, and equipment, net Effect of Foreign Exchange Option and Forward Derivatives in the Income Statement (Table) Derivative Instruments, Gain (Loss) by Income Statement Location [Axis] Derivative Instruments, Gain (Loss) by Income Statement Location [Axis] Income Statement and Other Comprehensive Income (Loss) Location [Domain] Income Statement and Other Comprehensive Income (Loss) Location [Domain] Other Income (Expense) [Member] Other Income (Expense) [Member] Derivative Instruments Not Designated as Hedging Instruments [Abstract] Foreign exchange option and forward contracts Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Income Tax Contingency [Table] Income Tax Contingency [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Internal Revenue Service (IRS) [Member] Internal Revenue Service (IRS) [Member] Domestic Country [Member] Domestic Country [Member] Foreign Country [Member] Foreign Country [Member] State and Local Jurisdiction [Member] State and Local Jurisdiction [Member] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Accrued interest Unrecognized Tax Benefits, Interest on Income Taxes Accrued Accrued penalties Unrecognized Tax Benefits, Income Tax Penalties Accrued Unrecognized tax benefits related to uncertain tax positions Unrecognized Tax Benefits The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income (loss) Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Stock-based compensation Share-based Compensation Amortization of prepaid debt fees Amortization of Financing Costs Amortization of convertible debt discount Deferred taxes, net Increase (Decrease) in Deferred Income Taxes Other adjustments, net Other Noncash Income (Expense) Changes in operating assets and liabilities, net of acquisition: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Other current assets Increase (Decrease) in Other Current Assets Other long-term assets Increase (Decrease) in Other Noncurrent Assets Accounts payables, other current liabilities, and taxes payable Increase (Decrease) in Accounts Payable and Accrued Liabilities Wages and benefits payable Increase (Decrease) in Employee Related Liabilities Unearned revenue Increase (Decrease) in Deferred Revenue Warranty Warranty Total increases (decreases) in estimated warranty claims based on historical and projected product performance trends and costs. Other operating, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Acquisitions of property, plant, and equipment Payments to Acquire Property, Plant, and Equipment Business acquisition, net of cash equivalents acquired Business Acquisitions Contingent Consideration Net Of Cash Equivalents Acquired The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. Amount may also included subsequent contingent consideration payments on previous acquisitions completed prior to January 1, 2009. Other investing, net Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from borrowings Proceeds from Issuance of Senior Long-term Debt Payments on debt Issuance of common stock Proceeds from Issuance of Common Stock Other financing, net Proceeds from (Payments for) Other Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of foreign exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Non-cash transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Property, plant, and equipment purchased but not yet paid, net Noncash or Part Noncash Acquisition, Fixed Assets Acquired Fair value of contingent and deferred consideration payable for business acquisition Fair value of contingent and deferred consideration payable for business acquisition Fair value as of the acquisition date of potential payments under the contingent and deferred consideration arrangement. Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Income taxes paid, net Income Taxes Paid, Net Interest, net of amounts capitalized Interest Paid, Net Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Class of Stock [Line Items] Class of Stock [Line Items] Preferred Stock, Shares Authorized Preferred Stock, Shares Authorized Preferred Stock, Shares Issued Preferred Stock, Shares Outstanding Preferred Stock, No Par Value Goodwill Disclosure [Text Block] Goodwill Disclosure [Text Block] Convertible Senior Subordinated Notes [Abstract] Convertible Senior Subordinated Notes [Abstract] Option of the Holders [Member] Option of the Holders [Member] Option of the Company [Member] Option of the Company [Member] Investment [Axis] Investment [Domain] Convertible Senior Subordinated Notes [Line Items] Estimated nonconvertible debt borrowing rate Estimated Nonconvertible Debt Borrowing Rate Rate prepresents the entities non-convertible debt borrowing rate at the time their convertible notes were issued, which also relfects the effective interest rate on the liability component. Repurchase of convertible senior subordinated debt Repurchase of convertible senior subordinated debt Repurchase of convertible senior subordinated debt Line of credit borrowed Line of credit borrowed Amount of line of credit borrowed to pay down debt. Plan Costs Health Benefit Plan Costs Amount represents health insurance plan costs such as paid claims, the change in the estimate of incurred but not reported claims, taxes related to health costs, and administrative fees. General Discussion of Derivative Instruments and Hedging Activities [Abstract] Derivative Financial Instruments [Text Block] Derivative Instruments and Hedging Activities Disclosure [Text Block] Restricted Stock Units (RSUs) [Member] Outstanding, beginning balance, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Released, Number Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Released, Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Released In Period Aggregate Intrinsic Value The aggregate instrinsic value for RSU's released is the market value of stock, before applicable income taxes, based on the closing price on the stock release date. Forfeited, Number Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Outstanding, ending balance, Number Expected to vest, Number Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest In Period Total number of restricted awards expected to vest as of the end of the reporting period. Expected to vest, Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Aggregate Intrinsic Value The aggregate intrinsic value of RSUs, as at the end of the period, expected to vest, is the market value of stock, before applicable income taxes, based on the closing price at the end of the period. Accounting Policies [Abstract] Basis of Consolidation [Policy Text Block] Consolidation, Policy [Policy Text Block] Cash and Cash Equivalents [Policy Text Block] Cash and Cash Equivalents, Policy [Policy Text Block] Accounts Receivable and Allowance for Doubtful Accounts [Policy Text Block] Receivables, Policy [Policy Text Block] Inventories [Policy Text Block] Inventory, Policy [Policy Text Block] Derivative Instruments [Policy Text Block] Derivatives, Policy [Policy Text Block] Property, Plant, and Equipment [Policy Text Block] Property, Plant and Equipment, Policy [Policy Text Block] Prepaid Debt Fees [Policy Text Block] Prepaid Debt Fees [Policy Text Block] Prepaid debt fees represent the capitalized direct costs incurred related to the issuance of debt and are recorded as noncurrent assets. These costs are amortized to interest expense over the lives 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. [Policy Text Block] Business Combinations [Policy Text Block] Business Combinations Policy [Policy Text Block] Goodwill and Intangible Assets [Policy Text Block] Goodwill and Intangible Assets, Policy [Policy Text Block] Contingencies [Policy Text Block] Commitments and Contingencies, Policy [Policy Text Block] Bonus and Profit Sharing [Policy Text Block] Compensation Related Costs, Policy [Policy Text Block] Warranty [Policy Text Block] Warranty [Policy Text Block] Disclosure of accounting policy for all warranty types including the methodology for measuring the liability. [Policy Text Block] Defined Benefit Pension Plans [Policy Text Block] Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block] Revenue Recognition [Policy Text Block] Revenue Recognition, Policy [Policy Text Block] Product and Software Development Costs [Policy Text Block] Research, Development, and Computer Software, Policy [Policy Text Block] Stock-based Compensation [Policy Text Block] Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Loss on Extinguishment of Debt, Net [Policy Text Block] Loss on Extinguishment of Debt, Net [Policy Text Block] Describes an entity's accounting policy for recording gains and losses on extinguishment of debt, which occurs upon partial or full redemption of the entity's borrowings. A gain or loss is recognized for the difference between the cash paid and the net carrying amount of the debt redeemed. Included in the net carrying amount is any unamortized premium or discount from the original issuance of the debt. [Policy Text Block] Income Tax, Policy [Policy Text Block] Income Tax, Policy [Policy Text Block] Foreign Exchange [Policy Text Block] Foreign Currency Transactions and Translations Policy [Policy Text Block] Fair Value Measurement [Policy Text Block] Fair Value of Financial Instruments, Policy [Policy Text Block] Use of Estimates [Policy Text Block] Use of Estimates, Policy [Policy Text Block] Restatement [Abstract] Restatement [Abstract] Consolidated Statement of Operations [Table Text Block] Restatement to Prior Year Income [Table Text Block] Consolidated Balance Sheet [Table Text Block] Consolidated Balance Sheet Restatement [Table Text Block] Consolidated Balance Sheet Restatement [Table Text Block] Consolidated Statement of Cash Flow [Table Text Block] Consolidated Statement of Cash Flow Restatement [Table Text Block] Consolidated Statement of Cash Flow Restatement [Table Text Block] Debt Disclosure [Abstract] Debt [Text Block] Debt Disclosure [Text Block] Segment Information [Text Block] Segment Reporting Disclosure [Text Block] Finite-Lived Intangible Assets, Future Amortization Expense [Abstract] Estimated Future Annual Amortization Expense [Table] Estimated Future Annual Amortization Expense [Table] Estimated Future Annual Amortization Expense [Table] 2011 Amount remaining at September 30 Future Amortization Expense, Remainder of Fiscal Year 2012 Future Amortization Expense, Year Two 2013 Future Amortization Expense, Year Three 2014 Future Amortization Expense, Year Four 2015 Future Amortization Expense, Year Five Beyond 2015 Future Amortization Expense, after Year Five Total intangible assets net Finite-Lived Intangible Assets, Future Amortization Expense Finite-Lived Intangible Assets [Abstract] Schedule of Intangible Assets by Major Class [Table Text Block] Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block] Summary of Intangible Asset Account Activity [Table Text Block] SummaryOfIntangibleAssetAccountActivity [Table Text Block] Summary schedule of intangible asset activity for the period (Table Text Block). Schedule of Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Accumulated OCI for Derivative and Nonderivative Instruments Designated as Hedging Instruments, Net of Tax [Table Text Block] Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Effect of Cash Flow Derivatives on the Balance Sheet and Income Statement, Before Tax [Table Text Block] Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block] Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Foreign Exchange Derivatives Not Designated As Hedging Instruments [Table Text Block] Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Class of Stock [Axis] Class of Stock [Domain] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Incremental Common Shares Attributable to Conversion of Debt Securities Debt instrument, convertible, conversion price Debt Instrument, Convertible, Conversion Price Income Statement [Abstract] Cost of revenues Cost of Goods and Services Sold Gross profit Operating expenses Operating Expenses [Abstract] Sales and marketing Selling and Marketing Expense Product development Research and Development Expense General and administrative General and Administrative Expense Amortization of intangible assets Amortization of Intangible Assets Restructuring Restructuring Charges Total operating expenses Operating Expenses Other income (expense) Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest Interest expense Interest Expense Other income (expense), net Other Nonoperating Income (Expense) Total other income (expense) Income tax (provision) benefit Income Tax Expense (Benefit) Weighted average common shares outstanding-Basic Weighted average common shares outstanding-Diluted Long Term Retainage Contract Receivables [Abstract] Long Term Retainage Contract Receivables [Abstract] Long Term Retainage Contract Receivables [Table] Long Term Retainage Receivables Billed But Not Yet Paid [Table] Long Term Retainage Receivables Billed But Not Yet Paid [Table] Reclassified from current accounts receivables to other long-term assets [Axis] Reclassified from current accounts receivables to other long-term assets [Axis] Reclassified from current accounts receivables to long-term current assets [Domain] Reclassified from current accounts receivables to long-term current assets [Domain] Reclassified from current accounts receivables to other long-term assets [Member] Reclassified from current accounts receivables to other long-term assets [Member] Long Term Retainage Contract Receivables [Axis] Long Term Retainage Contract Receivables [Axis] Long Term Retainage Contract Receivables [Axis] Long-term retainage contract [Domain] Long-term retainage contract [Domain] Long Term Retainage Contract Receivables [Member] Long Term Retainage Contract Receivables [Member] Long term Retainage Contract Receivables [Line Items] Long term Retainage Receivables [Line Items] Long term Retainage Receivables [Line Items] Contract Receivable Retainage, Due One Year or Less Contract Receivable Retainage, Due One Year or Less Unbilled Contracts Receivable Unbilled Contracts Receivable Number of months current retainage amounts and unbilled receivables are expected to be collected The number of months current retainage amounts and unbilled receivables are expected to be collected as of the balance sheet date. Long-term unbilled receivables and long-term retainage contract receivables Long-term unbilled receivables and Long-Term billed retainage Long-term unbilled receivables and Long-Term billed retainage, which has not been paid by the customer in accordance with long-term contract provisions. Contract Receivable Retainage, Due after One Year Contract Receivable Retainage, Due after One Year Number of months collection is not anticipated for long-term unbilled and retainage contract receivables The number of months collection is not anticipated for unbilled and retainage contract receivables as of the balance sheet date, which classifies the receivabels as long-term (greater than 12 months). Number of Months Long-Term Unbilled and Retainage Contract Receivables are Expected to be Collected The number of months that long-term unbilled and retainage contract receivables are expected to be collected as of the balance sheet date. Commitments and Contingencies [Text Block] Commitments and Contingencies Disclosure [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument [Member] Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Derivatives, Fair Value, by Balance Sheet Location [Axis] Derivatives, Fair Value, by Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Current Assets [Member] Other Current Assets [Member] Other Current Liabilities [Member] Other Current Liabilities [Member] Other Long Term Obligations [Member] Other Long Term Obligations [Member] Current Portion of Debt [Member] Current Portion of Debt [Member] Long-term Debt [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Asset Derivatives [Abstract] Derivative Assets [Abstract] Foreign exchange forward contracts asset Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value Liability Derivatives [Abstract] Derivative Liabilities [Abstract] Interest rate swap contracts Interest Rate Derivative Liabilities, at Fair Value Foreign exchange forward contracts liability Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Total liability derivatives Derivative Liability, Fair Value, Gross Liability Other Comprehensive Income (Loss) [Text Block] Comprehensive Income (Loss) Note [Text Block] Effect of Cash Flow Derivatives on the Balance Sheet and Income Statement, Before Tax [Table] Interest Expense [Member] Interest Rate Swap Contracts [Abstract] Interest Rate Derivatives [Abstract] Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax Gain (Loss) Recognized in Income on Derivative (Ineffective Portion) Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Schedule of Line of Credit Facilities [Table Text Block] Schedule of Line of Credit Facilities [Table Text Block] Schedule of Warranty Accruals [Table Text Block] Schedule of Warranty Accruals [Table Text Block] Schedule of Warranty Accruals [Table Text Block] Warranty Expense by Segment [Table Text Block] Warranty Expense by Segment [Table Text Block] Warranty Expense by Segment [Table Text Block] Schedule of Changes to Unearned Revenue for Extended Warranty [Table Text Block] Schedule of Changes to Unearned Revenue for Extended Warranty [Table Text Block] Health Benefit Plan Costs and Incurred But Not Reported Accrual Balance [Table Text Block] Health Benefit Plan Costs and Incurred But Not Reported Accrual Balance [Table Text Block] Health Benefit Plan Costs and Incurred But Not Reported Accrual Balance [Table Text Block] Accounts Receivable, Net [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Summary of Allowance for Doubtful Accounts [Table Text Block] Tabular disclosure of the allowance for doubtful accounts from the beginning of the respective period shown to the ending period presented. The rollforward itemizes the changes during the period, for example, increases in the provision for doubtful accounts, accounts written off, and effects of changes in foreign exchange rates. [Table Text Block] Inventories [Table Text Block] Schedule of Inventory, Current [Table Text Block] Property, Plant, and Equipment [Table Text Block] Property, Plant and Equipment [Table Text Block] Depreciation Expense [Table Text Block] Summary of Depreciation Expense [Table Text Block] Stock-based Compensation Exepnse by Plan Type [Table] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock options Stock or Unit Option Plan Expense Restricted stock units Restricted Stock or Unit Expense Unrestricted stock awards Unrestricted Stock Awards Compensation Expense The noncash expense that represents the cost of unrestricted stock distributed to board of directors as a portion of their compensation. ESPP Employee Stock Purchase Plan Compensation Expense The noncash expense that represents the cost of awards granted to employees as compensation under the employee stock purchase plan. Total stock-based compensation Related tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Consolidated Statement of Cash Flow Restatement [Abstract] Consolidated Statement of Cash Flow Restatement [Abstract] Consolidated Statment of Cash Flow Restatment [Table] Consolidated Statement of Cash Flow Restatement [Line Items] Net income Deferred taxes, net Accounts receivable Goodwill [Abstract] Goodwill [Abstract] Schedule of Goodwill Impairment (Table) Schedule of Goodwill Impairment [Table] Schedule of Goodwill Impairment [Table] Reporting Unit [Axis] Reporting Unit [Axis] Reporting Unit [Domain] Reporting Unit [Domain] Itron International Electricity [Member] Itron International Electricity [Member] Itron International Water [Member] Itron International Water [Member] Goodwill, Before Estimated Impairment Goodwill, Gross Goodwill, After Estimated Impairment Consolidated Statement of Operations Restatement [Abstract] Consolidated Statement of Operations Restatement [Abstract] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Revenue Operating Income Income before income taxes Income tax (provision) benefit Earnings per common share-Diluted General Discussion of Pension and Other Postretirement Benefits [Abstract] Defined Benefit Pension Plans [Text Block] Pension and Other Postretirement Benefits Disclosure [Text Block] Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Significant Accounting Policies [Text Block] Total Comprehensive Income (Loss) Net Of Tax [Table Text Block] Schedule of Comprehensive Income (Loss) [Table Text Block] Income Tax (Provision) Benefit Related To OCI [Table Text Block] Schedule Of Income Tax (Provision) Benefit Related To OCI [Table Text Block] Schedule Of Income Tax (Provision) Benefit Related To OCI [Table Text Block] Schedule of Debt [Table Text Block] Schedule of Debt [Table Text Block] Schedule of Long-Term Debt Repayments [Table Text Block] Schedule of Long-Term Debt Repayments [Table Text Block] Schedule of long-term debt repayments made during the reporting periods presented. Prepaid Debt Fees and Accrued Interest Expense [Table Text Block] Prepaid Debt Fees and Accrued Interest Expense [Table Text Block] Prepaid Debt Fees and Accrued Interest Expense associated with long-term debt. [Table Text Block] Carrying Amounts of Debt and Equity Component [Table Text Block] Carrying Amounts of Debt and Equity Component [Table Text Block] Table disclosing the face value, unamortized discount, net carrying amount of debt and equity components of the company's convertible senior subordinated notes. [Table Text Block] Schedule of Interest Expense On Liability Components [Table Text Block] ScheduleOfInterestExpenseOnLiabilityComponents [Table Text Block] Table disclosing the contractual interest coupon, amortization of the discount on the liability component and total interest expense relating to the company's convertible subordinated notes. [Table Text Block] Summary of the Allowance for Doubtful Accounts Activity [Abstract] Summary of the Allowance for Doubtful Accounts Activity [Abstract] Summary of the Allowance for Doubtful Accounts Activity [Table] Valuation and Qualifying Accounts Disclosure [Table] Summary of the Allownace for Doubtful Accounts Activity [Axis] Valuation Allowances and Reserves Type [Axis] Summary of Allowance for Doubtful Accounts Activity [Domain] Valuation Allowances and Reserves [Domain] Allowance for Doubtful Accounts [Member] Summary of Allowance for Doubtful Accounts Activity [Line Items] Valuation and Qualifying Accounts Disclosure [Line Items] Beginning balance Provision (release) of doubtful accounts, net Valuation Allowances and Reserves, Adjustments Accounts written-off Valuation Allowances and Reserves, Deductions Effects of change In exchange rates EffectsOfChangeInExchangeRates The effect of exchange rate changes on balances held in foreign currencies. Ending balance Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table] Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table] Reasonably Possible Significant Change in Unrecognized Tax Benefits by Item [Axis] Reasonably Possible Significant Change in Unrecognized Tax Benefits by Item [Axis] Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Nature of Uncertainty [Domain] Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Nature of Uncertainty [Domain] Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] Amount of unrecognized tax benefits that may reasonably possibly decrease within 12 months Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Income Tax Policy Additional Information [Abstract] Income Tax Policy Additional Information [Abstract] Income Tax Examination Likelihood Of Favorable Settlement Minimum For Recognition Income Tax Examination Likelihood Of Favorable Settlement Minimum For Recognition Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Table] Fair Value by Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items] Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected life (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term IBNR Accrual Liability for Unpaid Claims and Claims Adjustment Expense, Reported and Incurred but Not Reported (IBNR) Claims Ownership Interest Percentage [Abstract] Ownership Interest Percentage [Abstract] Basis of Consolidation [Table] Basis of Consolidation [Table] Basis of consolidation ownership interest policy [Table] Basis of Consolidation [Axis] Basis of Consolidation [Axis] Basis of Consolidation [Domain] Basis of Consolidation [Member] Basis of Consolidation [Member] Ownership Interest to be Held for Consolidation [Line Items] Ownership Interest to be Held for Consolidation [Line Items] Ownership Interest to be Held for Consolidation Ownership Interest to be Held for Consolidation Ownership Interest to be Held for Consolidation Ownership Interest To Use Equity Method Ownership Interest To Use Equity Method The equity method of accounting is used for entities in which the company has a 50% or less invesment and exercises significant influence. Ownership Interest To Use Cost Method Entities in which the company has less than 20% investment and where they do not excercise significant influence are accounted for under the cost method. Unamortized prepaid debt fees [Abstract] Unamortized prepaid debt fees [Abstract] Depreciation Expense [Abstract] Depreciation Expense [Abstract] Depreciation expense [Table] Depreciation expense [Table] Depreciation Expense [Table] Depreciation expense [Axis] Depreciation expense [Axis] Depreciation expense [Domain] Depreciation expense [Domain] Depreciation expense [Member] Depreciation expense [Member] Depreciation expense [Line Items] Depreciation Expense [Line Items] Depreciation Expense [Line Items] Depreciation expense Depreciation US Federal Effective Tax Rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate Effective Income Tax Rate, Continuing Operations Effective Income Tax Rate, Continuing Operations Net interest and penalties expense (benefit) Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Member] Credit Facility dated April 18, 2007 and amended in 2009 and 2010. It includes various currency denominated terms loans and a multicurrency revolving line of credit. The Credit Facility is secured by the assets of Itron, Inc. and our domestic operating subsidiaries. Unsecured Multicurrency Revolving Lines of Credit [Member] Unsecured multicurrency revolving lines of credit with various financial institutions.[Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Multicurrency revolving line of credit Standby letters of credit issued and outstanding Short-term borrowings Short-term Debt Net available for additional borrowings and lines of credit Unsecured Surety Bonds In Force Unsecured Surety Bonds In Force Unsecured surety bond in force as of the periods presented. The surety bonds represent an agreement between several parties to insure that the contracted work will be completed on time and on budget and will cover any losses incurred by poor contract performance. Fair Vlue of Financial Instruments [Abstract] Fair Vlue of Financial Instruments [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 2 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Assets Cash and cash equivalents, at fair value Cash and Cash Equivalents, Fair Value Disclosure Foreign exchange forwards, asset Foreign Exchange Forwards Carrying amount as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments. Foreign exchange forwards, asset, at fair value Liabilities Liabilities [Abstract] Term loans Term loans, at fair value Long-term Debt, Fair Value Line of Credit Facility, Amount Outstanding Line of Credit Facility, Fair Value of Amount Outstanding Line of Credit Facility, Fair Value of Amount Outstanding Convertible senior subordinated debt Convertible senior subordinated notes, at fair value Interest rate swaps Interest Rate Swaps Carrying value, which represents the fair value, as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. Interest rate swaps, at fair value Foreign exchange forwards, liability Foreign Exchange Forwards Liability Carrying amount as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments. Foreign exchange forwards, liability, at fair value Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Operating Segments [Member] Operating Segments [Member] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Major Customers Percentage Revenue Threshold Percentage Of Revenues By Major Customers Percentage represents the concentration risk threshold for customer revenues as a percent of total company revenues and/or total segment revenues. Customer with revenues greater than this percentage threshold of total company revenues and/or segment revenues must be stated. Number Of Major Customers Number Of Major Customers Represents number of customers with revenues greater than 10% of total company and/or segment revenues for the periods presented. Fair Value Measurement Policy Additional Information [Abstract] Fair Value Measurement Policy Additional Information [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Inputs, Level 1 [Member] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Fair Value, Disclosure Item Amounts [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets, Fair Value Disclosure Liabilities, Fair Value Disclosure Subsequent Event [Text Block] Subsequent Events [Text Block] Document And Entity Information Document And Entity Information [Abstract] Entities [Table] Entities [Table] Legal Entity [Axis] Entity [Domain] Document and Entity Information [Line Items] Entity Information [Line Items] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Trading Symbol Trading Symbol