Supplemental Financial Information - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Supplemental Financial Information [Abstract]
Research and development	$ 1,211	$ 2,476
Compensation and other employee liabilities	2,008	1,102
Legal	0	130
Other	131	204
Total accrued expenses and other current liabilities	$ 3,350	$ 3,912