Collaboration Revenue - Changes in Contract Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Deferred revenue - related party, Deductions	$ 1,493	$ (4,648)
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	1,493	(4,648)
Deferred revenue - related party, Balance at end of period	$ 102,324	$ 103,526