Development, Commercialization and Supply Agreement - Changes in Balances of Contract Assets and Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Contract liabilities:
Deferred revenue, Balance at Beginning of Period	$ 18,632	$ 20,846
Deferred revenue, Additions	128	4,608
Deferred revenue, Deductions	(2,051)	(6,822)
Deferred revenue, Balance at End of Period	$ 16,709	$ 18,632