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Fair Value Measurements - Schedule of roll-forward of fair value of deferred compensation plan assets categorized as level 3 in fair value hierarchy (Detail) - Deferred compensation assets - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Opening balance | $ 51,983 | $ 40,261
Additions (net of redemption) | 368 | 2,098
Change in fair value of deferred compensation plan assets | 3,208 | 2,386
Closing balance | $ 55,559 | $ 44,745

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- Definition Amount of gain (loss) recognized in income from asset 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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