v2.4.1.9

Shareholders' Equity Accumulated OCI Reclassified to Statement of Operations (Details) (USD $)
In Thousands, unless otherwise specified

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

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

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

$ (138)us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

$ (70)us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

$ (68)us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

Other Amounts Recognized in Other Comprehensive Income, before tax

(68)itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax

658itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax

0itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax

Income (loss) before income taxes

(14,909)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

(148,254)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

136,219us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

Income Tax Expense (Benefit)

(6,641)us-gaap_IncomeTaxExpenseBenefit

3,664us-gaap_IncomeTaxExpenseBenefit

(25,995)us-gaap_IncomeTaxExpenseBenefit

Net income (loss)

(21,550)us-gaap_ProfitLoss

(144,590)us-gaap_ProfitLoss

110,224us-gaap_ProfitLoss

Total reclassifications for the period, net of tax

(21,550)us-gaap_ProfitLoss

(144,590)us-gaap_ProfitLoss

110,224us-gaap_ProfitLoss

Reclassification out of Accumulated Other Comprehensive Income [Member]

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

Net income (loss)

(755)us-gaap_ProfitLoss
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember

^[1]

(1,379)us-gaap_ProfitLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember

^[1]

(168)us-gaap_ProfitLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember

^[1]

Total reclassifications for the period, net of tax

(755)us-gaap_ProfitLoss
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember

^[1]

(1,379)us-gaap_ProfitLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember

^[1]

(168)us-gaap_ProfitLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember

^[1]

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

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

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

(138)us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
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/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1],[2]

(70)us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1],[2]

(68)us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1],[2]

Defined Benefit Plan, Amortization of Gains (Losses)

(572)us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
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/ us-gaap_StatementEquityComponentsAxis
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^[1],[2]

(926)us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
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^[1],[2]

(161)us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
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^[1],[2]

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

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^[1],[2]

(325)us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
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^[1],[2]

(13)us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
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^[1],[2]

Other Amounts Recognized in Other Comprehensive Income, before tax

0itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax
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^[1],[2]

(658)itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
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^[1],[2]

0itri_OtherAmountsRecognizedInOtherComprehensiveIncomeBeforeTax
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
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^[1],[2]

Income (loss) before income taxes

(765)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
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= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

(1,979)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

(242)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

Income Tax Expense (Benefit)

10us-gaap_IncomeTaxExpenseBenefit
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
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^[1]

600us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

74us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

Net income (loss)

(755)us-gaap_ProfitLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

(1,379)us-gaap_ProfitLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

(168)us-gaap_ProfitLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

Total reclassifications for the period, net of tax

$ (755)us-gaap_ProfitLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
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^[1]

$ (1,379)us-gaap_ProfitLoss
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^[1]

$ (168)us-gaap_ProfitLoss
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= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
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= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember

^[1]

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

X

- Definition

(Gain) Loss recognized in other comprehensive income (but not yet recognized in net periodic benefit cost) arising during the period.

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- Definition

The amount of gains or losses recognized in net periodic benefit cost.

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- Definition

The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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