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Fair Value (Recorded amount of assets and liabilities measured at fair value) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
AFS Securities |  |
AFS securities | $ 506,806 | $ 528,148
Fair value, total | 509,927 | 532,059
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 | $ 506,806 | $ 530,570
Percent of assets and liabilities measured at fair value | 99.39% | 99.72%
Fair Value, Inputs, Level 3 [Member] |  |
AFS Securities |  |
Fair value, total | $ 3,121 | $ 1,489
Percent of assets and liabilities measured at fair value | 0.61% | 0.28%
Recurring items [Member] |  |
AFS Securities |  |
AFS securities | $ 506,806 | $ 528,148
Recurring items [Member] | US Treasury Securities |  |
AFS Securities |  |
AFS securities | 220,829 | 214,801
Recurring items [Member] | States and political subdivisions [Member] |  |
AFS Securities |  |
AFS securities | 82,899 | 92,876
Recurring items [Member] | Auction rate money market preferred [Member] |  |
AFS Securities |  |
AFS securities | 3,117 | 2,931
Recurring items [Member] | Mortgage-backed securities [Member] |  |
AFS Securities |  |
AFS securities | 28,955 | 32,815
Recurring items [Member] | Collateralized mortgage obligations [Member] |  |
AFS Securities |  |
AFS securities | 163,764 | 177,775
Recurring items [Member] | Corporate Debt Securities |  |
AFS Securities |  |
AFS securities | 7,242 | 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 | 506,806 | 528,148
Recurring items [Member] | Level 2 [Member] | US Treasury Securities |  |
AFS Securities |  |
AFS securities | 220,829 | 214,801
Recurring items [Member] | Level 2 [Member] | States and political subdivisions [Member] |  |
AFS Securities |  |
AFS securities | 82,899 | 92,876
Recurring items [Member] | Level 2 [Member] | Auction rate money market preferred [Member] |  |
AFS Securities |  |
AFS securities | 3,117 | 2,931
Recurring items [Member] | Level 2 [Member] | Mortgage-backed securities [Member] |  |
AFS Securities |  |
AFS securities | 28,955 | 32,815
Recurring items [Member] | Level 2 [Member] | Collateralized mortgage obligations [Member] |  |
AFS Securities |  |
AFS securities | 163,764 | 177,775
Recurring items [Member] | Level 2 [Member] | Corporate Debt Securities |  |
AFS Securities |  |
AFS securities | 7,242 | 6,950
Recurring items [Member] | Fair Value, Inputs, Level 3 [Member] |  |
AFS Securities |  |
AFS securities | 0 | 0
Recurring items [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury Securities |  |
AFS Securities |  |
AFS securities | 0 | 0
Recurring items [Member] | Fair Value, Inputs, Level 3 [Member] | States and political subdivisions [Member] |  |
AFS Securities |  |
AFS securities | 0 | 0
Recurring items [Member] | Fair Value, Inputs, Level 3 [Member] | Auction rate money market preferred [Member] |  |
AFS Securities |  |
AFS securities | 0 | 0
Recurring items [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed securities [Member] |  |
AFS Securities |  |
AFS securities | 0 | 0
Recurring items [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized mortgage obligations [Member] |  |
AFS Securities |  |
AFS securities | 0 | 0
Recurring items [Member] | Fair Value, Inputs, 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) | 357 | 1,083
Other Mortgage Servicing Rights, Fair Value Disclosure | 2,218 | 2,422
Foreclosed Assets, Fair Value Disclosure | 546 | 406
Nonrecurring items [Member] | Level 1 [Member] |  |
AFS Securities |  |
Impaired loans (net of the allowance for loan losses) | 0 | 0
Other Mortgage Servicing Rights, Fair Value Disclosure | 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
Other Mortgage Servicing Rights, Fair Value Disclosure | 0 | 2,422
Foreclosed Assets, Fair Value Disclosure | 0 | 0
Nonrecurring items [Member] | Fair Value, Inputs, Level 3 [Member] |  |
AFS Securities |  |
Impaired loans (net of the allowance for loan losses) | 357 | 1,083
Other Mortgage Servicing Rights, Fair Value Disclosure | 2,218 | 0
Foreclosed Assets, Fair Value Disclosure | $ 546 | $ 406

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