Collaboration Revenue - Changes in Contract Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Deferred revenue - related party, Deductions	$ (1,216)	$ (5,263)	$ (2,709)	$ (9,911)
ASU 2014-09 [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Deferred revenue - related party, Balance at beginning of period			103,817	108,174
Deferred revenue - related party, Additions			0	0
Deferred revenue - related party, Deductions			2,709	9,911
Deferred revenue - related party, Balance at end of period	$ 101,108	$ 98,263	$ 101,108	$ 98,263