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Fair Value Measurements - Rollforward of the Contingent Consideration Liabilities Valued Using Level 3 Inputs (Details) - Level 3 - Contingent consideration - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Assets |  |  |  |
Balance at beginning of period | $ 0 | $ 0 | $ 0 | $ 0
Purchases (sales), net | 24,339 | 0 | 24,339 | 0
Balance at end of period | 24,339 | 0 | 24,339 | 0
Liabilities |  |  |  |
Balance at beginning of period | 54,910 | 72,980 | 78,100 | 88,400
Additions for acquisition | 0 | 0 | 0 | 1,200
Reduction for payments made | 0 | 0 | (16,390) | (19,520)
Increase (reduction) of liability related to re-measurement of fair value | 0 | 0 | (6,800) | 2,900
Balance at end of period | $ 54,910 | $ 72,980 | $ 54,910 | $ 72,980

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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 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 purchases, (sales), issuances and (settlements) of financial instrument classified as an asset 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 -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + 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 -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of purchases 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 -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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