License and Asset Purchase Agreements - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized	$ 37,579	$ 39,679	$ 76,277	$ 87,349
Revenue from contract with customer, license and other revenue	37,579	39,679	76,277	87,349
Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
License-related revenue	2,500			7,800
Other milestone method revenue recognized		1,500	2,500	2,300
Other revenue			500	900
Menarini [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Reimbursement of development related expenses	4,900	6,500	9,600	13,600
License-related revenue			3,500
Other revenue	300		500
License and other revenue [Member] | Other Current Assets [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized			6,000		$ 7,800
Revenue from contract with customer, license and other revenue			6,000		7,800
License and other revenue [Member] | Accounts Receivable 1 [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized			9,100		22,500
Revenue from contract with customer, license and other revenue			9,100		$ 22,500
Royalty [Member] | Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized	700	1,000	1,400	1,300
Revenue from contract with customer, license and other revenue	700	1,000	1,400	1,300
Royalty [Member] | Menarini [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized	400		700
Revenue from contract with customer, license and other revenue	$ 400		700
Other Royalty [Member] | Antengene [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Royalty revenue recognized		1,600	400	4,100
Revenue from contract with customer, license and other revenue		$ 1,600	$ 400	$ 4,100