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Investment Securities (Amortized Cost and Fair Value of Investment Securities) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | $ 1,011,849 | $ 1,037,990
Securities available for sale, Unrealized Gains | 2,400 | 1,286
Securities available for sale, Unrealized Losses | 127,433 | 151,546
Securities available for sale | 886,816 | 887,730
Securities held to maturity, Amortized Cost | 121,282 | 148,160
Securities held to maturity, Unrealized Gains | 17 | 34
Securities held to maturity, Unrealized Losses | 8,686 | 11,164
Securities held to maturity, fair value | 112,613 | 137,030
Allowance for credit losses, Amortized Cost | (3) | (4)
Held-to-maturity securities, net , Amortized Cost | 121,279 | 148,156
U.S. Government Agency 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 | 24,535
Securities available for sale, Unrealized Gains | 0 | 0
Securities available for sale, Unrealized Losses | 1,947 | 2,724
Securities available for sale | 22,588 | 21,811
Securities held to maturity, Amortized Cost | 16,626 | 16,513
Securities held to maturity, Unrealized Gains | 0 | 0
Securities held to maturity, Unrealized Losses | 213 | 530
Securities held to maturity, fair value | 16,413 | 15,983
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 | 48,472 | 68,854
Securities held to maturity, Unrealized Gains | 17 | 34
Securities held to maturity, Unrealized Losses | 4,284 | 5,106
Securities held to maturity, fair value | 44,205 | 63,782
Mortgage-Backed Securities [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 978,658 | 1,013,455
Securities available for sale, Unrealized Gains | 2,349 | 1,286
Securities available for sale, Unrealized Losses | 125,486 | 148,822
Securities available for sale | 855,521 | 865,919
Securities held to maturity, Amortized Cost | 56,184 | 62,793
Securities held to maturity, Unrealized Gains | 0 | 0
Securities held to maturity, Unrealized Losses | 4,189 | 5,528
Securities held to maturity, fair value | 51,995 | 57,265
Collateralized Mortgage-Backed Securities Federal National Mortgage Association Certificates and Obligations (FNMA) [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 421,611 | 449,418
Securities available for sale, Unrealized Gains | 4 | 0
Securities available for sale, Unrealized Losses | 49,964 | 61,219
Securities available for sale | 371,651 | 388,199
Securities held to maturity, Amortized Cost | 5,284 | 5,729
Securities held to maturity, Unrealized Gains | 0 | 0
Securities held to maturity, Unrealized Losses | 379 | 467
Securities held to maturity, fair value | 4,905 | 5,262
Collateralized Mortgage-Backed Securities Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 374,630 | 402,399
Securities available for sale, Unrealized Gains | 549 | 488
Securities available for sale, Unrealized Losses | 50,573 | 59,665
Securities available for sale | 324,606 | 343,222
Securities held to maturity, Amortized Cost | 7,407 | 7,648
Securities held to maturity, Unrealized Gains | 0 | 0
Securities held to maturity, Unrealized Losses | 1,086 | 1,269
Securities held to maturity, fair value | 6,321 | 6,379
Collateralized Mortgage-Backed Securities Government National Mortgage Association Certificates and Obligations (GNMA) [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 120,796 | 126,417
Securities available for sale, Unrealized Gains | 221 | 252
Securities available for sale, Unrealized Losses | 19,415 | 21,409
Securities available for sale | 101,602 | 105,260
Securities held to maturity, Amortized Cost | 18,810 | 20,223
Securities held to maturity, Unrealized Gains | 0 | 0
Securities held to maturity, Unrealized Losses | 1,440 | 1,703
Securities held to maturity, fair value | 17,370 | 18,520
Collateralized Mortgage Obligations Federal National Mortgage Association Certificates and Obligations (FNMA) [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 10,131 | 10,954
Securities available for sale, Unrealized Gains | 0 | 0
Securities available for sale, Unrealized Losses | 1,927 | 2,343
Securities available for sale | 8,204 | 8,611
Securities held to maturity, Amortized Cost | 9,556 | 11,432
Securities held to maturity, Unrealized Gains | 0 | 0
Securities held to maturity, Unrealized Losses | 538 | 851
Securities held to maturity, fair value | 9,018 | 10,581
Collateralized Mortgage Obligations Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 37,123 | 19,766
Securities available for sale, Unrealized Gains | 562 | 0
Securities available for sale, Unrealized Losses | 3,607 | 4,186
Securities available for sale | 34,078 | 15,580
Securities held to maturity, Amortized Cost | 11,971 | 14,196
Securities held to maturity, Unrealized Gains | 0 | 0
Securities held to maturity, Unrealized Losses | 561 | 968
Securities held to maturity, fair value | 11,410 | 13,228
Collateralized Mortgage Obligations Government National Mortgage Association Certificates And Obligations Gnma [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 14,367 | 4,501
Securities available for sale, Unrealized Gains | 631 | 221
Securities available for sale, Unrealized Losses | 0 | 0
Securities available for sale | 14,998 | 4,722
Securities held to maturity, Amortized Cost | 3,156 | 3,565
Securities held to maturity, Unrealized Gains | 0 | 0
Securities held to maturity, Unrealized Losses | 185 | 270
Securities held to maturity, fair value | 2,971 | 3,295
Collateralized Mortgage Obligations Mortgage-Backed Securities, Issued by Private Enterprises [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 | 382 | 325
Securities available for sale, Unrealized Losses | 0 | 0
Securities available for sale | 382 | $ 325
Other Debt Obligations [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 8,656 |
Securities available for sale, Unrealized Gains | 51 |
Securities available for sale, Unrealized Losses | 0 |
Securities available for sale | $ 8,707 |

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