XML 61 R50.htm IDEA: XBRL DOCUMENT
v3.10.0.1

DERIVATIVE INSTRUMENTS - Schedule of Derivatives (Details) - Cash Flow Hedging - Designated as Hedging Instrument | Jun. 30, 2018 USD ($)
--- | ---
Derivative [Line Items] |
Current Notional Amount | $ 1,050,000,000
Estimated Fair Value, Assets (Liabilities) | 22,344,000
3-Month USD LIBOR | Interest Rate Swap Designated June 22, 2016 Tranche 1 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 1.062%
Estimated Fair Value, Assets (Liabilities) | $ 735,000
3-Month USD LIBOR | Interest Rate Swap Designated June 22, 2016 Tranche 2 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 1.062%
Estimated Fair Value, Assets (Liabilities) | $ 892,000
3-Month USD LIBOR | Interest Rate Swap Designated February 6, 2017 Tranche 1 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 1.834%
Estimated Fair Value, Assets (Liabilities) | $ 742,000
1-Month USD LIBOR | Interest Rate Swap Designated July 12, 2016 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 0.825%
Estimated Fair Value, Assets (Liabilities) | $ 777,000
1-Month USD LIBOR | Interest Rate Swap Designated February 6, 2017 Tranche 2 |
Derivative [Line Items] |
Current Notional Amount | $ 100,000,000
Fixed Interest Rate | 1.652%
Estimated Fair Value, Assets (Liabilities) | $ 1,855,000
1-Month USD LIBOR | Interest Rate Swap Designated March 27, 2017 |
Derivative [Line Items] |
Current Notional Amount | $ 100,000,000
Fixed Interest Rate | 1.971%
Estimated Fair Value, Assets (Liabilities) | $ 2,033,000
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 1 |
Derivative [Line Items] |
Current Notional Amount | $ 150,000,000
Fixed Interest Rate | 2.201%
Estimated Fair Value, Assets (Liabilities) | $ 3,431,000
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 2 |
Derivative [Line Items] |
Current Notional Amount | $ 150,000,000
Fixed Interest Rate | 2.201%
Estimated Fair Value, Assets (Liabilities) | $ 3,400,000
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 3 |
Derivative [Line Items] |
Current Notional Amount | $ 100,000,000
Fixed Interest Rate | 2.423%
Estimated Fair Value, Assets (Liabilities) | $ 2,093,000
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 4 |
Derivative [Line Items] |
Current Notional Amount | $ 50,000,000
Fixed Interest Rate | 2.423%
Estimated Fair Value, Assets (Liabilities) | $ 973,000
1-Month USD LIBOR | Interest Rate Swap Designated December 13, 2017 Tranche 5 |
Derivative [Line Items] |
Current Notional Amount | $ 200,000,000
Fixed Interest Rate | 2.313%
Estimated Fair Value, Assets (Liabilities) | $ 5,413,000

X
- 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
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=iart_ThreeMonthUSDLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedJune222016Tranche1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedJune222016Tranche2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedFebruary62017Tranche1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=iart_OneMonthUSDLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedJuly122016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedFebruary62017Tranche2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedMarch272017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedDecember132017Tranche1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedDecember132017Tranche2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedDecember132017Tranche3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedDecember132017Tranche4Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=iart_InterestRateSwapDesignatedDecember132017Tranche5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |