Schedule of Accounts Receivable, Net (Detail) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Accounts Receivable [Line Items]
Total accounts receivable, net	$ 23,493,000	$ 4,739,000
Allowance for doubtful accounts	0
Commercial product sales
Accounts Receivable [Line Items]
Accounts receivable, gross	22,971,000	7,939,000
Wholesaler distribution fees and prompt pay discounts	(2,863,000)	(1,696,000)
Reserve for returns	(3,135,000)	(2,797,000)
Total accounts receivable, net	16,973,000	3,446,000
Collaborations and services
Accounts Receivable [Line Items]
Accounts receivable, gross	6,520,000	2,060,000
Total accounts receivable, net	$ 6,520,000	1,293,000
Allowance for doubtful accounts		$ (767,000)