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Income Taxes - Reconciliation of U.S. Federal Statutory Income Tax Rate (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Income Tax Disclosure [Abstract] |  |
Statutory federal income tax rate | $ (7,508) | $ (24,473)
State income taxes, net of federal tax benefits | (908) | (3,170)
Tax credits | (2,358) | (972)
Stock-based compensation | 2,819 | 728
Permanent items | 12 | 9
Change in fair value of warrant liabilities and fair value of financial instruments issued in excess of proceeds | (7,273) | 18,078
State rate differential | 490 | 32
NOL true-up | (4) | 2
Other | 24 | 566
Change in valuation allowance | 15,137 | 9,200
Total provision for income taxes | $ 431 | $ 0

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