Fair Value Measurements - Summary of Fair Value of Investments Based upon Contractual Maturities (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Less than one year	$ 72,398	$ 70,968
Due in 1 - 5 years	94,815	63,893
Total	167,213	134,861
U.S. Treasuries [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than one year	50,145	49,756
Due in 1 - 5 years	51,038	49,926
Total	101,183	99,682
Mutual Funds Held In Rabbi Trust [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than one year	11,068	10,485
Total	11,068	10,485
Corporate Debt [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than one year	11,185	10,727
Due in 1 - 5 years	43,777	13,967
Total	$ 54,962	$ 24,694