Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts receivable	$ 0		$ 0
Bad debt expense	0	$ 0
Inventory raw materials	169,000		150,000
Inventory finished goods	100,000		35,000
Accounts Payable and Accrued Expenses [Member]
Significant Accounting Policies [Line Items]
Liabilities for co-pay assistance	$ 49,000		$ 44,000