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Investment Securities and Other Investments - Summary of Amortized Cost and Fair Values of Investment Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Securities available for sale	$ 321,081	$ 354,341
Investment securities, Amortized Cost	379,654	413,015
Investment securities, Gross Unrealized Gains	12	175
Investment securities, Gross Unrealized Losses	(58,585)	(58,849)
Investment securities, Fair Value	321,081	354,341
Mortgage Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	212,214	230,015
Available for sale, Gross Unrealized Gains		51
Available for sale, Gross Unrealized Losses	(35,244)	(33,730)
Securities available for sale	176,970	196,336
U.S. Treasury and Agencies [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	79,856	80,073
Available for sale, Gross Unrealized Losses	(10,985)	(12,911)
Securities available for sale	68,871	67,162
State and Municipal [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	50,682	60,018
Available for sale, Gross Unrealized Losses	(7,357)	(9,025)
Securities available for sale	43,325	50,993
Corporate Bonds [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	36,902	42,909
Available for sale, Gross Unrealized Gains	12	124
Available for sale, Gross Unrealized Losses	(4,999)	(3,183)
Securities available for sale	$ 31,915	$ 39,850

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