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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 - Accounts Payable Accrued and Other Liabilities - Contingent Consideration [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning Balance | $ 40,056 | $ 38,709 | $ 39,791 | $ 42,159
Total realized and unrealized (gains) losses included in Net income (loss) | 838 | 772 | 1,939 | (369)
Unrealized (gains) losses included in Other comprehensive income (loss)¹ | 0 | 8 | 0 | 67
Purchases/ Issuances | 0 | 0 | 0 | 2,959
Sales/ Settlements | (7,919) | (4,382) | (8,755) | (9,709)
Closing Balance | 32,975 | 35,107 | 32,975 | 35,107
Net income (loss) on Level 3 Assets/ Liabilities Outstanding | 838 | 772 | 1,939 | (369)
Other comprehensive income (loss) on Level 3 Assets / Liabilities Outstanding | $ 0 | $ 8 | $ 0 | $ 67

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- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liability net unrealized gain loss included in net income (loss). + References No definition available. + Details
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- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liability net unrealized gain loss included in other comprehensive income (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 Fair value measurement with unobservable inputs reconciliation recurring basis liability sales and settlements. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + 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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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + 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 (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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