Schedule of Accounts Receivable, Net (Detail) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Accounts Receivable [Line Items]
Allowance for credit losses	$ 0	$ 0
Total accounts receivable, net	18,184,000	14,901,000
Commercial product sales
Accounts Receivable [Line Items]
Accounts receivable, gross	18,359,000	20,199,000
Wholesaler distribution fees and prompt pay discounts	(2,363,000)	(2,469,000)
Reserve for returns	(7,817,000)	(6,215,000)
Allowance for credit losses	0	(157,000)
Total accounts receivable, net	8,179,000	11,358,000
Collaborations and services
Accounts Receivable [Line Items]
Total accounts receivable, net	$ 10,005,000	$ 3,543,000