Schedule of Accounts Receivable, Net (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Accounts Receivable [Line Items]
Total accounts receivable, net	$ 11,804,000	$ 14,901,000
Allowance for credit losses	0	0
Commercial product sales
Accounts Receivable [Line Items]
Accounts receivable, gross	22,879,000	20,199,000
Wholesaler distribution fees and prompt pay discounts	(4,186,000)	(2,469,000)
Reserve for returns	(8,858,000)	(6,215,000)
Total accounts receivable, net	9,835,000	11,358,000
Allowance for credit losses	0	(157,000)
Collaborations and services
Accounts Receivable [Line Items]
Total accounts receivable, net	$ 1,969,000	$ 3,543,000