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Investment Securities and Other Investments - Summary of Amortized Cost and Fair Values of Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Securities available for sale, at fair value	$ 312,035	$ 321,081
Investment securities, Amortized Cost	367,569	379,654
Investment securities, Gross Unrealized Gains	0	12
Investment securities, Gross Unrealized Losses	(55,534)	(58,585)
Investment securities, Fair Value	312,035	321,081
Mortgage Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	199,453	212,214
Available for sale, Gross Unrealized Losses	(35,015)	(35,244)
Securities available for sale, at fair value	164,438	176,970
U.S. Treasury and Agencies [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	79,430	79,856
Available for sale, Gross Unrealized Losses	(9,975)	(10,985)
Securities available for sale, at fair value	69,455	68,871
State and Municipal [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	50,233	50,682
Available for sale, Gross Unrealized Gains	0
Available for sale, Gross Unrealized Losses	(7,296)	(7,357)
Securities available for sale, at fair value	42,937	43,325
Corporate Bonds [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available for sale, Amortized Cost	38,453	36,902
Available for sale, Gross Unrealized Gains		12
Available for sale, Gross Unrealized Losses	(3,248)	(4,999)
Securities available for sale, at fair value	$ 35,205	$ 31,915

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