Income Taxes - Provision for Federal and State Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 17,611	$ 18,498	$ 15,043
State	1,365	1,337	1,098
Deferred:
Federal	3,440	(9,288)	(1,068)
State	113	(566)	(739)
Provision for federal and state income taxes, total	$ 22,529	$ 9,981	$ 14,334