Schedule of Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts Receivable [Line Items]
Total accounts receivable, net	$ 9,823	$ 4,739
Allowance for doubtful accounts	(800)
Commercial product sales
Accounts Receivable [Line Items]
Accounts receivable, gross	8,656	7,939
Wholesaler distribution fees and prompt pay discounts	(1,201)	(1,696)
Reserve for returns	(3,089)	(2,797)
Total accounts receivable, net	4,366	3,446
Collaborations and services
Accounts Receivable [Line Items]
Accounts receivable, gross	6,224	2,060
Total accounts receivable, net	5,457	1,293
Allowance for doubtful accounts	$ (767)	$ (767)