Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Accrued research and development	$ 27,411	$ 32,684
Employee compensation and benefits	26,615	21,778
Accrued legal and professional expenses	2,063	1,457
Accrued construction costs	6,891	0
Accrued other	4,037	4,957
Total accrued expenses	$ 67,017	$ 60,876