Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts receivable	$ 0		$ 0
Bad debt expense	0	$ 0
Inventory raw materials	150,000		150,000
Inventory work in progress	102,000		0
Inventory finished goods	26,000		35,000
Accounts Payable and Accrued Expenses [Member]
Significant Accounting Policies [Line Items]
Liabilities for co-pay assistance	$ 99,000		$ 44,000