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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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