Investments - Summary of Composition of Short and Long-term Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 1,258,950	$ 1,709,820
Unrealized Gains	897	1,573
Unrealized Losses	(261)	(353)
Aggregate Fair Value	1,259,586	1,711,040
Commercial Paper [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	3,715	4,941
Aggregate Fair Value	3,715	4,941
Corporate Bonds [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	286,512	284,337
Unrealized Gains	773	533
Unrealized Losses	(70)	(295)
Aggregate Fair Value	287,215	284,575
U.S. Government Agency Securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	93,019	117,158
Unrealized Gains	97	260
Unrealized Losses	(36)	(49)
Aggregate Fair Value	93,080	117,369
US Treasury Securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	875,704	1,303,384
Unrealized Gains	27	780
Unrealized Losses	(155)	(9)
Aggregate Fair Value	$ 875,576	$ 1,304,155

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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