Fair Value Measurements - Summary of Fair Value of Investments Based upon Contractual Maturities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-Sale [Line Items]
Less than one year	$ 18,535		$ 34,001
Due in 1 - 5 years	114,309		49,791
Total	132,844	$ 132,844	83,792
U.S. Treasuries [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than one year			24,618
Due in 1 - 5 years	98,711		49,791
Total	98,711		74,409
Mutual Funds Held In Rabbi Trust [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than one year	9,587		9,383
Total	9,587		$ 9,383
Corporate Debt [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than one year	8,948
Due in 1 - 5 years	15,598
Total	$ 24,546