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Fair Value of Financial Assets and Liabilities - Changes in Level 3 Liabilities Measured at Fair Value on Recurring Basis (Detail) - Level 3 [Member] - Accounts Payable Accrued and Other Liabilities [Member] - Contingent Consideration [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |
Opening Balance, Liabilities | $ 45,984 | $ 41,385
Total realized and unrealized (gains) losses included in Net income (loss), Liabilities | 5,622 | (1,586)
Unrealized (gains)losses included in Other Comprehensive Income (loss), Liabilities | (3) | 1,401
Purchases/ Issuances, Liabilities |  | 17,995
Sales/ Settlements, Liabilities | (9,444) | (13,581)
Closing Balance, Liabilities | 42,159 | 45,984
Unrealized (gains)losses for Level 3 Liabilities Outstanding | $ 5,622 | $ (776)

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- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liability net, unrealized gain (loss). + References No definition available. + Details
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- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liability purchases and issuances. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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