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Marketable Securities - Summary of Marketable securities by Security (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Amortized Cost	$ 581,865	$ 384,487
Gross Unrealized Gains	32	419
Gross Unrealized Losses	(1,603)	(388)
Fair Value	580,294	384,518
Commercial paper [Member]
Marketable Securities [Line Items]
Amortized Cost	105,591	67,098
Gross Unrealized Gains		26
Gross Unrealized Losses	(146)	(44)
Fair Value	105,445	67,080
Corporate bonds [Member]
Marketable Securities [Line Items]
Amortized Cost	321,594	193,876
Gross Unrealized Gains	24	328
Gross Unrealized Losses	(1,235)	(255)
Fair Value	320,383	193,949
Government and agency securities [Member]
Marketable Securities [Line Items]
Amortized Cost	124,967	89,044
Gross Unrealized Gains	8	58
Gross Unrealized Losses	(212)	(75)
Fair Value	124,763	89,027
US Treasury Securities [Member]
Marketable Securities [Line Items]
Amortized Cost	29,713	34,469
Gross Unrealized Gains		7
Gross Unrealized Losses	(10)	(14)
Fair Value	$ 29,703	$ 34,462

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