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Fair Value (Recorded amount of assets and liabilities measured at fair value) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
AFS Securities
AFS securities	$ 505,646	$ 528,148
Fair value, total	507,196	529,637
Level 1 [Member]
AFS Securities
Fair value, total	$ 0	$ 0
Percent of assets and liabilities measured at fair value	0.00%	0.00%
Level 2 [Member]
AFS Securities
Fair value, total	$ 505,646	$ 528,148
Percent of assets and liabilities measured at fair value	99.69%	99.72%
Level 3 [Member]
AFS Securities
Fair value, total	$ 1,550	$ 1,489
Percent of assets and liabilities measured at fair value	0.31%	0.28%
Recurring items [Member]
AFS Securities
AFS securities	$ 505,646	$ 528,148
Recurring items [Member] | US Treasury Securities
AFS Securities
AFS securities	215,333	214,801
Recurring items [Member] | States and political subdivisions [Member]
AFS Securities
AFS securities	83,051	92,876
Recurring items [Member] | Auction rate money market preferred [Member]
AFS Securities
AFS securities	3,008	2,931
Recurring items [Member] | Mortgage-backed securities [Member]
AFS Securities
AFS securities	29,541	32,815
Recurring items [Member] | Collateralized mortgage obligations [Member]
AFS Securities
AFS securities	167,709	177,775
Recurring items [Member] | Corporate Debt Securities
AFS Securities
AFS securities	7,004	6,950
Recurring items [Member] | Level 1 [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 1 [Member] | US Treasury Securities
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 1 [Member] | States and political subdivisions [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 1 [Member] | Auction rate money market preferred [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 1 [Member] | Mortgage-backed securities [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 1 [Member] | Collateralized mortgage obligations [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 1 [Member] | Corporate Debt Securities
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 2 [Member]
AFS Securities
AFS securities	505,646	528,148
Recurring items [Member] | Level 2 [Member] | US Treasury Securities
AFS Securities
AFS securities	215,333	214,801
Recurring items [Member] | Level 2 [Member] | States and political subdivisions [Member]
AFS Securities
AFS securities	83,051	92,876
Recurring items [Member] | Level 2 [Member] | Auction rate money market preferred [Member]
AFS Securities
AFS securities	3,008	2,931
Recurring items [Member] | Level 2 [Member] | Mortgage-backed securities [Member]
AFS Securities
AFS securities	29,541	32,815
Recurring items [Member] | Level 2 [Member] | Collateralized mortgage obligations [Member]
AFS Securities
AFS securities	167,709	177,775
Recurring items [Member] | Level 2 [Member] | Corporate Debt Securities
AFS Securities
AFS securities	7,004	6,950
Recurring items [Member] | Level 3 [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 3 [Member] | US Treasury Securities
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 3 [Member] | States and political subdivisions [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 3 [Member] | Auction rate money market preferred [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 3 [Member] | Mortgage-backed securities [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 3 [Member] | Collateralized mortgage obligations [Member]
AFS Securities
AFS securities	0	0
Recurring items [Member] | Level 3 [Member] | Corporate Debt Securities
AFS Securities
AFS securities	0	0
Nonrecurring items [Member]
AFS Securities
Impaired loans (net of the allowance for loan losses)	921	1,083
Foreclosed Assets, Fair Value Disclosure	629	406
Nonrecurring items [Member] | Level 1 [Member]
AFS Securities
Impaired loans (net of the allowance for loan losses)	0	0
Foreclosed Assets, Fair Value Disclosure	0	0
Nonrecurring items [Member] | Level 2 [Member]
AFS Securities
Impaired loans (net of the allowance for loan losses)	0	0
Foreclosed Assets, Fair Value Disclosure	0	0
Nonrecurring items [Member] | Level 3 [Member]
AFS Securities
Impaired loans (net of the allowance for loan losses)	921	1,083
Foreclosed Assets, Fair Value Disclosure	$ 629	$ 406

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