v2.4.1.9

Restructuring Restructuring Related Balance Sheet Activity (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve - Beginning Balance | $ 36,341 us-gaap_RestructuringReserve |  |
Costs incurred and charged to expense | 50,857 us-gaap_RestructuringCharges | 35,497 us-gaap_RestructuringCharges | 1,665 us-gaap_RestructuringCharges
Cash payments | (16,313)us-gaap_PaymentsForRestructuring |  |
Non-cash items | 5,220 us-gaap_RestructuringCostsAndAssetImpairmentCharges |  |
Effect of change in exchange rates | (2,806)us-gaap_RestructuringReserveTranslationAdjustment |  |
Restructuring Reserve - Ending Balance | 62,859 us-gaap_RestructuringReserve | 36,341 us-gaap_RestructuringReserve |
Employee severance costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve - Beginning Balance | 32,709 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |  |
Costs incurred and charged to expense | 41,952 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |  |
Cash payments | (12,732)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |  |
Non-cash items | 0 us-gaap_RestructuringCostsAndAssetImpairmentCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |  |
Effect of change in exchange rates | (2,596)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |  |
Restructuring Reserve - Ending Balance | 59,333 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |  |
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve - Beginning Balance | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = itri_AssetImpairmentAndNetGainLossOnSaleOrDisposalMember |  |
Costs incurred and charged to expense | 5,220 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = itri_AssetImpairmentAndNetGainLossOnSaleOrDisposalMember |  |
Cash payments | 0 us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = itri_AssetImpairmentAndNetGainLossOnSaleOrDisposalMember |  |
Non-cash items | 5,220 us-gaap_RestructuringCostsAndAssetImpairmentCharges / us-gaap_RestructuringCostAndReserveAxis = itri_AssetImpairmentAndNetGainLossOnSaleOrDisposalMember |  |
Effect of change in exchange rates | 0 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = itri_AssetImpairmentAndNetGainLossOnSaleOrDisposalMember |  |
Restructuring Reserve - Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = itri_AssetImpairmentAndNetGainLossOnSaleOrDisposalMember |  |
Other restructuring costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve - Beginning Balance | 3,632 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |  |
Costs incurred and charged to expense | 3,685 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |  |
Cash payments | (3,581)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |  |
Non-cash items | 0 us-gaap_RestructuringCostsAndAssetImpairmentCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |  |
Effect of change in exchange rates | (210)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |  |
Restructuring Reserve - Ending Balance | $ 3,526 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |  |

X
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References 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 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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