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Supplemental Balance Sheet Information - Summary of Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Payables and Accruals [Abstract] |  |
Accrued research and development expenses | $ 24,952 | $ 27,970
Accrued personnel costs | 7,162 | 8,348
Accrued general and administrative expenses | 4,046 | 2,129
Other | 119 | 35
Total | $ 36,279 | $ 38,482

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