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Defined Benefit Pension Plans Schedule of Amounts Recognized in Other Comprehensive Income (loss), pre-tax (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Defined Benefit Plan Disclosure [Line Items] | |||
| Net actuarial (gain) loss | $ 25,838us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax | $ (5,881)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax | $ 24,492us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax |
| Settlement/ curtailment loss | (55)us-gaap_OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax | (325)us-gaap_OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax | (13)us-gaap_OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax |
| Plan asset (gain) loss | 129itri_OtherComprehensiveIncomeLossPlanAssetGainLossBeforeTax | 516itri_OtherComprehensiveIncomeLossPlanAssetGainLossBeforeTax | 108itri_OtherComprehensiveIncomeLossPlanAssetGainLossBeforeTax |
| Amortization of net actuarial gain (loss) | (572)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax | (926)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax | (161)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax |
| Amortization of prior service cost | (138)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax | (70)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax | (68)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax |
| Other | 68itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax | (658)itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax | 0itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax |
| Other comprehensive (income) loss | $ 25,270us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax | $ (7,344)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax | $ 24,358us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax |
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- Definition
(Gain) Loss recognized in other comprehensive income (but not yet recognized in net periodic benefit cost) arising during the period. No definition available.
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- Definition
Pretax change in the value of the plan assets resulting from experience different from that assumed that has not been recognized in net periodic benefit cost. No definition available.
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- Details
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- Definition
Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before tax of gain (loss) adjustment to other comprehensive income (loss) resulting from settlement or curtailment of defined benefit pension and other postretirement defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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