Supplemental Financial Information - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of Accrued Expenses and Other Current Liabilities [Line Items]
Research and development	$ 2,623	$ 133
Bonuses and other employee liabilities	1,102
Legal	130
Professional fees	0	200
Other	204	90
Total accrued expenses and other current liabilities	$ 4,059	$ 423