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Prepaid Expenses, Other Assets, Accrued Expenses and Other Liabilities - Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Prepaid Expense and Other Assets, Current [Abstract] |  |
Prepaid insurance | $ 624 | $ 823
Prepaid clinical | 4,128 | 2,115
Prepaid other | 185 | 143
Other current assets | 90 | 28
Total prepaid expenses and other current assets | $ 5,027 | $ 3,109

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