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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Prepaid Expense and Other Assets [Abstract] |  |
Prepaid research and development expenses | $ 6,421 | $ 9,780
Interest receivable | 1,001 | 1,054
Prepaid insurance | 55 | 499
Other prepaid expenses and other assets | 311 | 517
Total prepaid expenses and other current assets | $ 7,788 | $ 11,850

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