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Investments (Summary of Amortized Cost and Fair Value of Held to Maturity Securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Schedule of Investments [Line Items] |  |
HTM debt securities | $ 544,931 | $ 546,583
Unrealized Gains | 3,134 | 763
Unrealized Losses | (37,470) | (41,153)
Debt Securities, Held-to-maturity, Fair Value | 510,595 | 506,193
Obligations of U.S. government-sponsored enterprises |  |
Schedule of Investments [Line Items] |  |
HTM debt securities | 7,593 | 7,457
Unrealized Gains | 0 | 0
Unrealized Losses | (528) | (777)
Debt Securities, Held-to-maturity, Fair Value | 7,065 | 6,680
Amortized cost, unamortized unrealized loss | 992 | 1,100
Obligations of states and political subdivisions |  |
Schedule of Investments [Line Items] |  |
HTM debt securities | 56,262 | 55,978
Unrealized Gains | 1,242 | 431
Unrealized Losses | (731) | (1,610)
Debt Securities, Held-to-maturity, Fair Value | 56,773 | 54,799
Amortized cost, unamortized unrealized loss | 5,600 | 6,100
Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises |  |
Schedule of Investments [Line Items] |  |
HTM debt securities | 304,850 | 317,406
Unrealized Gains | 0 | 0
Unrealized Losses | (21,623) | (24,766)
Debt Securities, Held-to-maturity, Fair Value | 283,227 | 292,640
Amortized cost, unamortized unrealized loss | 34,600 | 38,400
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises |  |
Schedule of Investments [Line Items] |  |
HTM debt securities | 157,118 | 145,069
Unrealized Gains | 515 | 0
Unrealized Losses | (13,497) | (13,724)
Debt Securities, Held-to-maturity, Fair Value | 144,136 | 131,345
Amortized cost, unamortized unrealized loss | 18,400 | 20,700
Subordinated corporate bonds |  |
Schedule of Investments [Line Items] |  |
HTM debt securities | 19,108 | 20,673
Unrealized Gains | 1,377 | 332
Unrealized Losses | (1,091) | (276)
Debt Securities, Held-to-maturity, Fair Value | 19,394 | 20,729
Amortized cost, unamortized unrealized loss | $ 85 | $ 117

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