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Balance Sheet Components - Summary of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Prepaid Expense and Other Assets, Current [Abstract] |  |
Prepaid research and development costs | $ 4,643 | $ 2,617
Prepaid insurance | 418 | 704
Other prepaid expenses | 708 | 760
Other current assets | 23 | 63
Total prepaid expenses and other current assets | $ 5,792 | $ 4,144

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