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Investment Securities (Amortized Cost and Fair Value of Investment Securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | $ 1,127,057 | $ 1,184,835
Securities available for sale, Unrealized Gains | 338 | 8,446
Securities available for sale, Unrealized Losses | 173,024 | 14,766
Securities available for sale | 954,371 | 1,178,515
Securities held to maturity, Amortized Cost | 188,980 | 205,586
Securities held to maturity, Unrealized Gains | 24 | 4,683
Securities held to maturity, Unrealized Losses | 14,816 | 449
Securities held to maturity, fair value | 174,188 | 209,820
Allowance for credit losses, Amortized Cost | (5) | (5)
Held To Maturity Securities Net | 188,975 | 205,581
U.S. Government Agencies And Government Sponsored Enterprises [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 24,535 | 15,793
Securities available for sale, Unrealized Gains | 0 | 195
Securities available for sale, Unrealized Losses | 3,420 | 97
Securities available for sale | 21,115 | 15,891
Securities held to maturity, Amortized Cost | 16,363 |
Securities held to maturity, Unrealized Gains | 0 |
Securities held to maturity, Unrealized Losses | 848 |
Securities held to maturity, fair value | 15,515 |
State And Political Subdivisions [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities held to maturity, Amortized Cost | 97,583 | 111,399
Securities held to maturity, Unrealized Gains | 24 | 2,412
Securities held to maturity, Unrealized Losses | 7,172 | 300
Securities held to maturity, fair value | 90,435 | 113,511
Mortgage-Backed Securities, Federal National Mortgage Association [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 545,797 | 576,163
Securities available for sale, Unrealized Gains | 0 | 6,565
Securities available for sale, Unrealized Losses | 76,193 | 5,242
Securities available for sale | 469,604 | 577,486
Securities held to maturity, Amortized Cost | 8,332 | 9,275
Securities held to maturity, Unrealized Gains | 0 | 411
Securities held to maturity, Unrealized Losses | 582 | 0
Securities held to maturity, fair value | 7,750 | 9,686
Mortgage-Backed Securities, Federal Home Loan Mortgage Corporation [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 410,829 | 430,010
Securities available for sale, Unrealized Gains | 0 | 952
Securities available for sale, Unrealized Losses | 68,608 | 6,435
Securities available for sale | 342,221 | 424,527
Securities held to maturity, Amortized Cost | 7,959 | 8,706
Securities held to maturity, Unrealized Gains | 0 | 137
Securities held to maturity, Unrealized Losses | 1,396 | 144
Securities held to maturity, fair value | 6,563 | 8,699
Mortgage-Backed Securities, Government National Mortgage Association [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 112,202 | 122,266
Securities available for sale, Unrealized Gains | 1 | 298
Securities available for sale, Unrealized Losses | 18,037 | 2,082
Securities available for sale | 94,166 | 120,482
Securities held to maturity, Amortized Cost | 22,541 | 27,400
Securities held to maturity, Unrealized Gains | 0 | 706
Securities held to maturity, Unrealized Losses | 2,116 | 2
Securities held to maturity, fair value | 20,425 | 28,104
Collateralized Mortgage Obligations, Federal National Mortgage Association [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 12,175 | 15,346
Securities available for sale, Unrealized Gains | 0 | 26
Securities available for sale, Unrealized Losses | 2,603 | 433
Securities available for sale | 9,572 | 14,939
Securities held to maturity, Amortized Cost |  | 19,485
Securities held to maturity, Unrealized Gains |  | 368
Securities held to maturity, Unrealized Losses |  | 3
Securities held to maturity, fair value |  | 19,850
Collateralized Mortgage Obligations, Federal National Mortgage Association [Member] | Federal National Mortgage Association [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities held to maturity, Amortized Cost | 14,268 |
Securities held to maturity, Unrealized Gains | 0 |
Securities held to maturity, Unrealized Losses | 1,119 |
Securities held to maturity, fair value | 13,149 |
Collateralized Mortgage Obligations, Federal Home Loan Mortgage Corporation [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 21,519 | 25,257
Securities available for sale, Unrealized Gains | 0 | 0
Securities available for sale, Unrealized Losses | 4,163 | 477
Securities available for sale | 17,356 | 24,780
Securities held to maturity, Amortized Cost | 17,712 | 23,840
Securities held to maturity, Unrealized Gains |  | 565
Securities held to maturity, Unrealized Losses | 1,253 | 0
Securities held to maturity, fair value | 16,459 | 24,405
Collateralized Mortgage Obligations, Privately Issued [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 0 | 0
Securities available for sale, Unrealized Gains | 337 | 410
Securities available for sale, Unrealized Losses | 0 | 0
Securities available for sale | 337 | 410
Securities held to maturity, Amortized Cost | 4,222 |
Securities held to maturity, Unrealized Gains | 0 |
Securities held to maturity, Unrealized Losses | 330 |
Securities held to maturity, fair value | 3,892 |
Collateralized Mortgage Obligations, Government National Mortgage Association [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities held to maturity, Amortized Cost |  | 5,481
Securities held to maturity, Unrealized Gains |  | 84
Securities held to maturity, Unrealized Losses |  | 0
Securities held to maturity, fair value |  | 5,565
Mortgage-Backed Securities [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 1,102,522 | 1,169,042
Securities available for sale, Unrealized Gains | 338 | 8,251
Securities available for sale, Unrealized Losses | 169,604 | 14,669
Securities available for sale | 933,256 | 1,162,624
Securities held to maturity, Amortized Cost | 75,034 | 94,187
Securities held to maturity, Unrealized Gains | 0 | 2,271
Securities held to maturity, Unrealized Losses | 6,796 | 149
Securities held to maturity, fair value | $ 68,238 | $ 96,309

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