Fair Value Measurements - Valuation of Company's Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets
Money market funds	$ 14,300	$ 14,206
Assets Fair Value Total	50,175	50,284
Liabilities
Contingent consideration payable	39,119	41,090
Mutual Funds Held In Rabbi Trust [Member]
Assets
Trading securities	11,312	11,195
U.S. Treasuries [Member]
Assets
Trading securities	24,563	24,883
Level 1 [Member]
Assets
Money market funds	14,300	14,206
Assets Fair Value Total	14,300	14,206
Level 2 [Member]
Assets
Assets Fair Value Total	35,875	36,078
Level 2 [Member] \| Mutual Funds Held In Rabbi Trust [Member]
Assets
Trading securities	11,312	11,195
Level 2 [Member] \| U.S. Treasuries [Member]
Assets
Trading securities	24,563	24,883
Level 3 [Member]
Liabilities
Contingent consideration payable	$ 39,119	$ 41,090

Money market funds fair value.

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- Definition

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

+ References

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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-Publisher FASB
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