Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets, Gross [Abstract]
Net operating loss carryforwards	$ 35,050	$ 24,829
Capitalized research and development	46,240	16,839
Research and development tax credit carryforwards	15,053	7,465
Stock-based compensation	3,617	1,634
Other	930	1,345
Total deferred tax assets	100,890	52,112
Valuation allowance	(100,890)	(52,107)	$ (23,400)
Net deferred tax assets		5
Deferred tax liabilities
Other		(5)
Total deferred tax liabilities		(5)
Net deferred tax assets	$ 0	$ 0