Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accrued Expenses And Other Current Liabilities [Abstract]
Accrued research, development and clinical trial expenses	$ 4,567	$ 4,426
Accrued payroll and related expenses	5,173	4,030
Accrued professional fees	1,973	344
Accrued other	4,624	1,610
Accrued expenses and other liabilities current	$ 16,337	$ 10,410