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Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured on Recurring Basis (Detail) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets measured at fair value
Assets measured at fair value	$ 206,125	$ 190,344
Liabilities measured at fair value
Liabilities measured at fair value	47,783	50,926
Derivative Financial Instruments, Liabilities [Member]
Liabilities measured at fair value
Liabilities measured at fair value	1,882	3,277
Contingent Consideration Liabilities [Member]
Liabilities measured at fair value
Liabilities measured at fair value	45,901	47,649
Cash and Cash Equivalents [Member]
Assets measured at fair value
Assets measured at fair value	204,301	184,224
Derivative Financial Instruments [Member]
Assets measured at fair value
Assets measured at fair value	1,824
Contingent Consideration Receivable [Member]
Assets measured at fair value
Assets measured at fair value		6,120
Quoted Prices in Active Markets (Level 1) [Member]
Assets measured at fair value
Assets measured at fair value	204,301	184,224
Quoted Prices in Active Markets (Level 1) [Member] | Cash and Cash Equivalents [Member]
Assets measured at fair value
Assets measured at fair value	204,301	184,224
Significant Other Observable Inputs (Level 2) [Member]
Assets measured at fair value
Assets measured at fair value	1,824
Liabilities measured at fair value
Liabilities measured at fair value	1,882	3,277
Significant Other Observable Inputs (Level 2) [Member] | Derivative Financial Instruments, Liabilities [Member]
Liabilities measured at fair value
Liabilities measured at fair value	1,882	3,277
Significant Other Observable Inputs (Level 2) [Member] | Derivative Financial Instruments [Member]
Assets measured at fair value
Assets measured at fair value	1,824
Significant Other Unobservable Inputs (Level 3) [Member]
Assets measured at fair value
Assets measured at fair value		6,120
Liabilities measured at fair value
Liabilities measured at fair value	45,901	47,649
Significant Other Unobservable Inputs (Level 3) [Member] | Contingent Consideration Liabilities [Member]
Liabilities measured at fair value
Liabilities measured at fair value	$ 45,901	47,649
Significant Other Unobservable Inputs (Level 3) [Member] | Contingent Consideration Receivable [Member]
Assets measured at fair value
Assets measured at fair value		$ 6,120

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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- Definition

Fair value of financial and nonfinancial obligations.

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-Topic 820
-SubTopic 10
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