Leases - Summary of Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Amortization lease assets	$ 2	$ 1	$ 3	$ 1
Finance lease costs		1		1
Total finance lease costs	2	2	3	2
Operating lease costs	90	84	175	175
Short-term lease costs	0	5	8	10
Total operating lease expense	$ 90	$ 89	$ 183	$ 185