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Supplemental Balance Sheet Information - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Prepaid Expense and Other Assets, Current [Abstract] |  |
Prepaid research and development expenses | $ 23,658 | $ 6,872
Prepaid general and administrative expenses | 3,767 | 2,058
Interest receivable | 2,749 | 1,552
Other | 2,700 | 1,527
Total | $ 32,874 | $ 12,009

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