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Investment Securities - Securities Temporarily Impaired (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	$ 5,161	$ 23,512	$ 4,762
Unrealized Losses (Less than 12 months)	(64)	(292)	(43)
Fair Value (Estimated) (12 months or more)	232,928	234,055	248,992
Unrealized Losses (12 months or more)	(42,790)	(53,876)	(43,993)
Fair Value (Estimated)	238,089	257,567	253,754
Unrealized Losses	(42,854)	(54,168)	(44,036)
U.S. Treasury & Agency securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	0	0	0
Unrealized Losses (Less than 12 months)	0	0	0
Fair Value (Estimated) (12 months or more)	17,882	19,796	20,735
Unrealized Losses (12 months or more)	(5,163)	(6,246)	(5,305)
Fair Value (Estimated)	17,882	19,796	20,735
Unrealized Losses	(5,163)	(6,246)	(5,305)
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	1,776	18,544	4,762
Unrealized Losses (Less than 12 months)	(10)	(222)	(43)
Fair Value (Estimated) (12 months or more)	183,340	186,155	199,001
Unrealized Losses (12 months or more)	(31,741)	(40,804)	(33,000)
Fair Value (Estimated)	185,116	204,699	203,763
Unrealized Losses	(31,751)	(41,026)	(33,043)
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	2,276	4,968	0
Unrealized Losses (Less than 12 months)	(23)	(70)	0
Fair Value (Estimated) (12 months or more)	31,706	28,104	29,256
Unrealized Losses (12 months or more)	(5,886)	(6,826)	(5,688)
Fair Value (Estimated)	33,982	33,072	29,256
Unrealized Losses	(5,909)	$ (6,896)	$ (5,688)
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	1,109
Unrealized Losses (Less than 12 months)	(31)
Fair Value (Estimated) (12 months or more)	0
Unrealized Losses (12 months or more)	0
Fair Value (Estimated)	1,109
Unrealized Losses	$ (31)

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