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Fair value measurement - Valuation technique and inputs used to determine fair value (Details) | 9 Months Ended
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Sep. 25, 2016
Probability Of Payment | Weighted Average |
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items] |
Contingent consideration | 71.30%
Probability Of Payment | Minimum |
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items] |
Contingent consideration | 2.00%
Probability Of Payment | Maximum |
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items] |
Contingent consideration | 100.00%
Market Approach Valuation Technique | Weighted Average |
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items] |
Contingent consideration | 8.40%
Market Approach Valuation Technique | Minimum |
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items] |
Contingent consideration | 2.30%
Market Approach Valuation Technique | Maximum |
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items] |
Contingent consideration | 10.00%

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- Definition Fair value assets and liabilities measured on unobservable inputs. + References No definition available. + Details
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