Provision for Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Provision for income taxes:
Deferred income tax expense (benefit)			$ (742)	$ 426
Total provision for income taxes	$ 1,528	$ 1,288	4,970	4,214
Expected tax expense, at the U.S. federal statutory income tax rate of 21%	1,361	1,138	4,427	3,707
State income taxes	194	170	633	570
FDII benefit	(34)	(33)	(106)	(73)
Other, net	7	13	16	10
Total provision for income taxes	$ 1,528	$ 1,288	$ 4,970	$ 4,214