License and Asset Purchase Agreements - Schedule of License and Other Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Total license and other revenue	$ 9,119	$ 10,669	$ 19,529	$ 30,039
License and other revenue [Member] | Menarini [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Total license and other revenue	5,611	6,531	14,348	13,617
License and other revenue [Member] | Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Total license and other revenue	760	987	1,872	10,001
Other [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Total license and other revenue	$ 2,748	$ 3,151	$ 3,309	$ 6,421