Income Taxes - Summary of Reconciliation of Statutory Federal Tax and Effective Income Tax Rates (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure Income Taxes Summary Of Reconciliation Of Statutory Federal Tax And Effective Income Tax Rates [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%		35.00%
Reconciliation of Effective Income Tax Rates Continuing Operations
Federal income tax expense (1)	[1]	$ 25,982	$ 23,666	$ 19,778
State income taxes, net of federal benefit		7,714	6,371	5,051
ESOP dividend deduction		(177)	(180)	(218)
Other		313	293	768
Income Tax Expense from Continuing Operations		$ 33,832	$ 29,231	$ 23,538
Effective Income Tax Rate from Continuing Operations		27.34%	25.94%	24.99%
Net Operating Losses and Tax Carryback		$ 0	$ (919)	$ (1,841)

[1] Federal income taxes were calculated at 21 percent for 2022, 2021, and 2020.