Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Accounts Payable and Accrued Expenses
Accounts payable	$ 6,755	$ 11,583
Accrued research projects	1,010	4,343
Accrued compensation and benefits	1,214	6,519
Accrued professional fees and other	4,754	3,147
Total	$ 13,733	$ 25,592