Leases - Schedule of Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Fixed operating lease cost	$ 507	$ 537	$ 1,561	$ 1,554
Short-term lease costs	0	0	0	42
Total lease expense	507	537	1,561	1,596
Right-of-use asset obtained in exchange for operating lease liabilities	0	0	0	1,343
Operating cash flows from operating leases	334	314	1,014	917
Sublease income	$ 49	$ 49	$ 147	$ 147
Weighted-average remaining lease term-operating leases (in years)	4 years 2 months 12 days		4 years 2 months 12 days
Weighted-average discount rate-operating leases	11.30%		11.30%