Lease - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Sublease income for the remainder of 2022	$ 15,000		$ 15,000
Sublease income	16,000	$ 19,000	32,000	$ 28,000
Rent expense	$ 27,000	$ 40,000	$ 54,000	$ 67,000