Investments in Marketable Securities - Summary of Investments Classified As Available-For-Sale Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 339,595	$ 119,695
Gross Unrealized Gains	28
Gross Unrealized Losses	(567)	(842)
Aggregate Estimated Fair Value	339,056	118,853
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	90,828	43,780
Gross Unrealized Gains	1
Gross Unrealized Losses	(1)
Aggregate Estimated Fair Value	90,828	43,780
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	98,539	72,183
Gross Unrealized Gains	26
Gross Unrealized Losses	(226)	(824)
Aggregate Estimated Fair Value	98,339	71,359
Government debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	150,228	3,732
Gross Unrealized Gains	1
Gross Unrealized Losses	(340)	(18)
Aggregate Estimated Fair Value	$ 149,889	$ 3,714