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Fair Value of Financial Assets and Liabilities - Narrative (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Contingent consideration, fair value | $ 8,909 | $ 24,279
Undiscounted value of the payments on all contingencies | 14,400 | 34,700
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Alternative to equity securities | $ 82,500 | $ 83,800

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