Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Accrued payroll and related expenses	$ 3,339	$ 5,797
Accrued external research and development expenses	2,274	1,823
Accrued professional fees	708	696
Accrued restructuring expenses	0	448
Accrued other	236	209
Accrued expenses and other current liabilities	$ 6,557	$ 8,973