Income Taxes - Provision for Federal and State Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 16,775	$ 18,188	$ 17,611
State	1,520	1,447	1,365
Deferred:
Federal	(609)	(458)	3,440
State	(101)	(87)	113
Provision for federal and state income taxes, total	$ 17,585	$ 19,090	$ 22,529