License and Asset Purchase Agreements - Schedule of License and Other Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Total license and other revenue	$ 10,669	$ 2,422	$ 30,039	$ 3,951
License and other revenue [Member] | Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Total license and other revenue	987	101	10,001	593
License and other revenue [Member] | Menarini [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Total license and other revenue	6,531	0	13,617
Other [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Total license and other revenue	$ 3,151	$ 2,321	$ 6,421	$ 3,358