Schedule of Accounts Receivable, Net (Detail) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Accounts Receivable [Line Items]
Total accounts receivable, net	$ 15,030,000	$ 4,739,000
Allowance for doubtful accounts	0
Commercial product sales
Accounts Receivable [Line Items]
Accounts receivable, gross	14,869,000	7,939,000
Wholesaler distribution fees and prompt pay discounts	(2,451,000)	(1,696,000)
Reserve for returns	(3,173,000)	(2,797,000)
Total accounts receivable, net	9,245,000	3,446,000
Collaborations and services
Accounts Receivable [Line Items]
Accounts receivable, gross	5,785,000	2,060,000
Total accounts receivable, net	$ 5,785,000	1,293,000
Allowance for doubtful accounts		$ (767,000)