Fair value measurement - technique and inputs used to determine fair value of assets or liabilities (Detail)	12 Months Ended
Dec. 31, 2015
Discount Rate
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Discount rate	8.30%
Probability of Payment
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Contingent consideration, weighted average	69.60%
Minimum \| Discount Rate
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Discount rate	2.60%
Minimum \| Probability of Payment
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Contingent consideration	0.00%
Maximum \| Discount Rate
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Discount rate	10.00%
Maximum \| Probability of Payment
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Contingent consideration	100.00%

Fair value assets and liabilities measured on unobservable inputs.

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- Definition

Valuation techniques significant unobservable inputs discount.

+ References

No definition available.

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- Definition

Weighted average range of valuation technique used in fair value measurement of recurring items.

+ References

No definition available.

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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