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Investment Securities (Credit Quality Information) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | $ 513,282 | $ 559,455
Aaa |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 498,631 |
Aa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 1,470 |
A3 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 4,000 |
Baa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 4,000 |
Baa2 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 500 |
NR |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 4,681 |
U.S. Treasury and government agencies |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 143,442 | 148,097
U.S. Treasury and government agencies | Aaa |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 140,761 |
U.S. Treasury and government agencies | Aa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
U.S. Treasury and government agencies | A3 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
U.S. Treasury and government agencies | Baa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
U.S. Treasury and government agencies | Baa2 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
U.S. Treasury and government agencies | NR |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 2,681 |
Mortgage-backed securities |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 357,870 | 398,884
Mortgage-backed securities | Aaa |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 357,870 |
Mortgage-backed securities | Aa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Mortgage-backed securities | A3 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Mortgage-backed securities | Baa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Mortgage-backed securities | Baa2 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Mortgage-backed securities | NR |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Obligations of states and political subdivisions |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 1,470 | 1,474
Obligations of states and political subdivisions | Aaa |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Obligations of states and political subdivisions | Aa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 1,470 |
Obligations of states and political subdivisions | A3 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Obligations of states and political subdivisions | Baa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Obligations of states and political subdivisions | Baa2 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Obligations of states and political subdivisions | NR |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Other debt securities |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 10,500 | $ 11,000
Other debt securities | Aaa |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Other debt securities | Aa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 0 |
Other debt securities | A3 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 4,000 |
Other debt securities | Baa1 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 4,000 |
Other debt securities | Baa2 |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | 500 |
Other debt securities | NR |  |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] |  |
Amortized Cost | $ 2,000 |

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