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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Accrued expenses | $ 53 | $ 75
Stock-based compensation | 2,238 | 2,834
Lease liability | 553 | 631
Other | (2,300) | (798)
Capitalized Sec. 174 R&E | 13,202 | 10,405
Net operating loss carryforwards | 48,684 | 46,437
Research and development credits | 6,145 | 1,044
Total deferred tax assets | 68,575 | 60,628
Valuation allowances | (68,575) | (60,628)
Net deferred tax assets | $ 0 | $ 0

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