License and Asset Purchase Agreements - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized			$ 39,679	$ 22,601	$ 87,349	$ 45,861
Milestone method revenue recognized			1,500	1,000	2,300	1,500
Other royalty revenue			1,600	1,300	4,100	1,900
Revenue from contract with customer, license and other revenue			39,679	22,601	87,349	45,861
Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Milestone method revenue recognized					7,800	300
Other revenue					900
Menarini [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Reimbursement of development related expenses			6,500		13,600
License and other revenue [Member] | Other Current Assets [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized	$ 30,400	$ 1,400
Revenue from contract with customer, license and other revenue	30,400	1,400
License and other revenue [Member] | Other Assets [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized	4,900	19,500
Revenue from contract with customer, license and other revenue	$ 4,900	$ 19,500
Royalty [Member] | Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized			1,000	100	1,300	300
Revenue from contract with customer, license and other revenue			$ 1,000	$ 100	$ 1,300	$ 300