License Agreements - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Revenue from contract with customer, license and other revenue	$ 44,044	$ 38,783	$ 111,988	$ 114,695
Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Other milestone method revenue recognized				2,000
Other income	200		500
Menarini [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Reimbursement of development related expenses	1,500	2,000	15,000	15,000
Milestone method revenue recognized	8,200	6,000	8,200	10,000
Other income		200		600
License and other revenue [Member] \| Accounts Receivable 1 [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Revenue from contract with customer, license and other revenue			5,300		$ 2,900
Royalty [Member] \| Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Revenue from contract with customer, license and other revenue	500		1,600	1,200
Royalty [Member] \| Menarini [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Revenue from contract with customer, license and other revenue	$ 1,000	$ 500	$ 2,900	$ 1,600