Balance Sheet Items - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid research and development expenses	$ 8,216	$ 5,657
Prepaid insurance	830	918
Other prepaid expenses and other assets	4,367	2,352
Total prepaid expenses and other current assets	$ 13,413	$ 8,927