2.4.0.82409402 - Disclosure - Stock-Based Compensation Stock-Based Compensation Expense and Related Tax Benefit (Details)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$D2013Q2http://www.sec.gov/CIK0000780571duration2013-04-01T00:00:002013-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$D2012Q2http://www.sec.gov/CIK0000780571duration2012-04-01T00:00:002012-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$D2013Q2YTDhttp://www.sec.gov/CIK0000780571duration2013-01-01T00:00:002013-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$D2012Q2YTDhttp://www.sec.gov/CIK0000780571duration2012-01-01T00:00:002012-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 3us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Share-based Compensation Arrangement by Share-based Payment Award [Line Items]2false 4us-gaap_StockOptionPlanExpenseus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse519000519USD$falsetruefalse2truefalsefalse337000337USD$falsetruefalse3truefalsefalse992000992USD$falsetruefalse4truefalsefalse609000609USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 false2Stock options3false 4us-gaap_RestrictedStockExpenseus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse41580004158falsefalsefalse2truefalsefalse43750004375falsefalsefalse3truefalsefalse83930008393falsefalsefalse4truefalsefalse78910007891falsefalsefalsexbrli:monetaryItemTypemonetaryThe noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 false2Restricted stock units4false 4itri_UnrestrictedStockAwardsCompensationExpenseitri_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse205000205falsefalsefalse2truefalsefalse205000205falsefalsefalse3truefalsefalse402000402falsefalsefalse4truefalsefalse410000410falsefalsefalsexbrli:monetaryItemTypemonetaryThe noncash expense that represents the cost of unrestricted stock distributed to board of directors as a portion of their compensation.No definition available.false2Unrestricted stock awards5false 4itri_EmployeeStockPurchasePlanCompensationExpenseitri_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse144000144falsefalsefalse2truefalsefalse141000141falsefalsefalse3truefalsefalse335000335falsefalsefalse4truefalsefalse346000346falsefalsefalsexbrli:monetaryItemTypemonetaryThe noncash expense that represents the cost of awards granted to employees as compensation under the employee stock purchase plan.No definition available.false2ESPP6false 4us-gaap_ShareBasedCompensationus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse50260005026falsefalsefalse2truefalsefalse50580005058falsefalsefalse3truefalsefalse1012200010122falsefalsefalse4truefalsefalse92560009256falsefalsefalsexbrli:monetaryItemTypemonetaryThe aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 true2Total stock-based compensation7false 4us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpenseus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse13910001391USD$falsetruefalse2truefalsefalse13750001375USD$falsetruefalse3truefalsefalse27550002755USD$falsetruefalse4truefalsefalse25640002564USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false2Related tax benefitfalseStock-Based Compensation Stock-Based Compensation Expense and Related Tax Benefit (Details) (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.itron.com/role/StockBasedCompensationStockBasedCompensationExpenseAndRelatedTaxBenefitDetails47