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DERIVATIVE INSTRUMENTS (Summary of Fair Value in Balance Sheet for Derivatives Designated Hedging Instruments) (Details) (USD $) | 12 Months Ended |
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Dec. 31, 2014 | Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Line Items] |  |
Derivative fair value of derivative liability | $ 898,000 us-gaap_DerivativeFairValueOfDerivativeLiability | $ 2,439,000 us-gaap_DerivativeFairValueOfDerivativeLiability
Interest rate swap |  |
Derivative Instruments and Hedging Activities Disclosure [Line Items] |  |
Derivative, Notional Amount | 97,500,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_InterestRateSwapMember | 112,500,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_InterestRateSwapMember
Reduction In Notional Amount Of Interest Rate Derivatives In Next Twelve Months | 11,300,000 iart_ReductionInNotionalAmountOfInterestRateDerivativesInNextTwelveMonths / us-gaap_DerivativeByNatureAxis = us-gaap_InterestRateSwapMember |
Interest rate swap | Accrued expenses and other current liabilities |  |
Derivative Instruments and Hedging Activities Disclosure [Line Items] |  |
Derivative fair value of derivative liability | 898,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = iart_AccruedExpensesAndOtherCurrentLiabilitiesMember / us-gaap_DerivativeByNatureAxis = us-gaap_InterestRateSwapMember | 1,676,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = iart_AccruedExpensesAndOtherCurrentLiabilitiesMember / us-gaap_DerivativeByNatureAxis = us-gaap_InterestRateSwapMember
Interest rate swap | Other liabilities |  |
Derivative Instruments and Hedging Activities Disclosure [Line Items] |  |
Derivative fair value of derivative liability | $ 0 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLiabilitiesMember / us-gaap_DerivativeByNatureAxis = us-gaap_InterestRateSwapMember | $ 763,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLiabilitiesMember / us-gaap_DerivativeByNatureAxis = us-gaap_InterestRateSwapMember

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- Details
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- Definition Reduction in Notional Amount of Interest Rate Derivatives in the next twelve months. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313 + Details
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