Income Taxes - Provision for Federal and State Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 18,188	$ 17,611	$ 18,498
State	1,447	1,365	1,337
Deferred:
Federal	(458)	3,440	(9,288)
State	(87)	113	(566)
Provision for federal and state income taxes, total	$ 19,090	$ 22,529	$ 9,981