Supplemental Disclosures - Schedules of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Accrued external research and development expenses	$ 14,350	$ 13,762
Accrued sublicense fees and royalties	13,060	14,234
Accrued personnel costs	12,449	18,146
Accrued external general and administrative expenses	1,901	2,717
Accrued purchases of property and equipment	137	386
Other accrued expenses and current liabilities	591	458
Accrued expenses and other current liabilities	$ 42,488	$ 49,703