Lease Obligations - Schedule of Operating Lease Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Leases [Abstract]
Operating lease cost	$ 212	$ 191	$ 408	$ 399
Variable lease cost	14	5	28	27
Total operating lease cost	$ 226	$ 196	$ 436	$ 426