Collaboration Revenue - Changes in Contract Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Deferred revenue - related party, Deductions	$ 10,446	$ 21,565
ASU 2014-09 [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Deferred revenue - related party, Balance at beginning of period	108,174	110,071
Deferred revenue - related party, Additions	8,157	10,000
Deferred revenue - related party, Deductions	(12,514)	(11,897)
Deferred revenue - related party, Balance at end of period	$ 103,817	108,174
Deferred revenue, Balance at beginning of period		9,668
Deferred revenue, Additions		7,493
Deferred revenue, Deductions		$ (17,161)