Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts receivable	$ 0		$ 0
Bad debt expense	0	$ 0
Inventory raw materials	214,000		239,000
Inventory work in progress	122,000
Inventory finished goods	28,000		50,000
Accounts Receivable [Member]
Significant Accounting Policies [Line Items]
Medicaid and Medicare rebates			13,000
Accounts Payable and Other Current Liabilities [Member]
Significant Accounting Policies [Line Items]
Medicaid and Medicare rebates	15,000
Accounts Payable and Accrued Expenses [Member]
Significant Accounting Policies [Line Items]
Liabilities for co-pay assistance	$ 76,000		$ 66,000