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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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