Investment Securities - Securities Temporarily Impaired (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	$ 14,235	$ 3,794	$ 27,197
Unrealized Losses (Less than 12 months)	(108)	(63)	(1,264)
Fair Value (Estimated) (12 months or more)	245,549	257,711	246,627
Unrealized Losses (12 months or more)	(54,858)	(50,342)	(54,199)
Fair Value (Estimated)	259,784	261,505	273,824
Unrealized Losses	(54,966)	(50,405)	(55,463)
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)	19,778	19,830	19,361
Unrealized Losses (12 months or more)	(6,260)	(6,203)	(6,668)
Fair Value (Estimated)	19,778	19,830	19,361
Unrealized Losses	(6,260)	(6,203)	(6,668)
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	8,451	1,712	19,062
Unrealized Losses (Less than 12 months)	(43)	(14)	(974)
Fair Value (Estimated) (12 months or more)	197,155	208,717	201,093
Unrealized Losses (12 months or more)	(41,758)	(38,477)	(40,959)
Fair Value (Estimated)	205,606	210,429	220,155
Unrealized Losses	(41,801)	(38,491)	(41,933)
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	4,484	2,082	8,135
Unrealized Losses (Less than 12 months)	(62)	(49)	(290)
Fair Value (Estimated) (12 months or more)	28,616	27,700	24,656
Unrealized Losses (12 months or more)	(6,840)	(5,653)	(6,525)
Fair Value (Estimated)	33,100	29,782	32,791
Unrealized Losses	(6,902)	(5,702)	(6,815)
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	1,300	0	0
Unrealized Losses (Less than 12 months)	(3)	0	0
Fair Value (Estimated) (12 months or more)	0	1,464	1,517
Unrealized Losses (12 months or more)	0	(9)	(47)
Fair Value (Estimated)	1,300	1,464	1,517
Unrealized Losses	$ (3)	$ (9)	$ (47)

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