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Fair Value of Financial Assets and Liabilities, Fair Value Measurements of Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | $ 1,111,505 | $ 1,163,724
Equity securities at fair value | 3,529 | 3,158
U.S. Treasury and Government Agencies [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 340,501 | 354,817
State and Political Subdivisions [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 261,430 | 264,945
U.S. Government Sponsored Agency Mortgage-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 436,376 | 456,736
Asset-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 73,198 | 87,226
Recurring [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Equity securities at fair value | 3,529 | 3,158
Mortgage servicing rights | 7,792 | 7,665
Recurring [Member] | U.S. Treasury and Government Agencies [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 340,501 | 354,817
Recurring [Member] | State and Political Subdivisions [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 261,430 | 264,945
Recurring [Member] | U.S. Government Sponsored Agency Mortgage-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 436,376 | 456,736
Recurring [Member] | Asset-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 73,198 | 87,226
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Equity securities at fair value | 0 | 0
Mortgage servicing rights | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | U.S. Treasury and Government Agencies [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 323,332 | 336,285
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | State and Political Subdivisions [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | U.S. Government Sponsored Agency Mortgage-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | Asset-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 0 | 0
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Equity securities at fair value | 0 | 0
Mortgage servicing rights | 0 | 0
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | U.S. Treasury and Government Agencies [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 17,169 | 18,532
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | State and Political Subdivisions [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 261,430 | 264,945
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | U.S. Government Sponsored Agency Mortgage-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 436,376 | 456,736
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Asset-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 73,198 | 87,226
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Equity securities at fair value | 3,529 | 3,158
Mortgage servicing rights | 7,792 | 7,665
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | U.S. Treasury and Government Agencies [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 0 | 0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | State and Political Subdivisions [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 0 | 0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | U.S. Government Sponsored Agency Mortgage-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | 0 | 0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | Asset-backed Securities [Member] |  |
Assets measured - recurring basis [Abstract] |  |
Debt securities available-for-sale | $ 0 | $ 0

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