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Investment Securities (Amortized Cost and Fair Value of Investment Securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | $ 1,184,835 | $ 607,665
Securities available for sale, Unrealized Gains | 8,446 | 20,462
Securities available for sale, Unrealized Losses | 14,766 | 68
Securities available for sale | 1,178,515 | 628,059
Securities held to maturity, Amortized Cost | 205,586 | 271,973
Securities held to maturity, Unrealized Gains | 4,683 | 10,062
Securities held to maturity, Unrealized Losses | 449 |
Securities held to maturity, fair value | 209,820 | 282,035
Allowance for credit losses, Amortized Cost | (5) | (7)
Held To Maturity Securities Net | 205,581 | 271,966
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 | 15,793 | 6,239
Securities available for sale, Unrealized Gains | 195 | 396
Securities available for sale, Unrealized Losses | 97 |
Securities available for sale | 15,891 | 6,635
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 | 111,399 | 144,506
Securities held to maturity, Unrealized Gains | 2,412 | 4,478
Securities held to maturity, Unrealized Losses | 300 |
Securities held to maturity, fair value | 113,511 | 148,984
Collateralized Mortgage Obligations [Member] | 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 | 15,346 | 3,047
Securities available for sale, Unrealized Gains | 26 | 97
Securities available for sale, Unrealized Losses | 433 |
Securities available for sale | 14,939 | 3,144
Securities held to maturity, Amortized Cost | 19,485 | 29,988
Securities held to maturity, Unrealized Gains | 368 | 1,075
Securities held to maturity, Unrealized Losses | 3 |
Securities held to maturity, fair value | 19,850 | 31,063
Collateralized Mortgage Obligations [Member] | 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 | 25,257 | 0
Securities available for sale, Unrealized Gains | 0 |
Securities available for sale, Unrealized Losses | 477 |
Securities available for sale | 24,780 | 0
Securities held to maturity, Amortized Cost | 23,840 | 35,897
Securities held to maturity, Unrealized Gains | 565 | 1,581
Securities held to maturity, fair value | 24,405 | 37,478
Collateralized Mortgage Obligations [Member] | 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 | 7,864
Securities held to maturity, Unrealized Gains | 84 | 265
Securities held to maturity, fair value | 5,565 | 8,129
Collateralized Mortgage Obligations [Member] | Privately Issued [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Unrealized Gains | 410 | 435
Securities available for sale | 410 | 435
Mortgage-Backed Securities [Member] |  |
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item] |  |
Securities available for sale, Amortized Cost | 1,169,042 | 601,426
Securities available for sale, Unrealized Gains | 8,251 | 20,066
Securities available for sale, Unrealized Losses | 14,669 | 68
Securities available for sale | 1,162,624 | 621,424
Securities held to maturity, Amortized Cost | 94,187 | 127,467
Securities held to maturity, Unrealized Gains | 2,271 | 5,584
Securities held to maturity, Unrealized Losses | 149 |
Securities held to maturity, fair value | 96,309 | 133,051
Mortgage-Backed Securities [Member] | 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 | 576,163 | 350,627
Securities available for sale, Unrealized Gains | 6,565 | 15,549
Securities available for sale, Unrealized Losses | 5,242 | 44
Securities available for sale | 577,486 | 366,132
Securities held to maturity, Amortized Cost | 9,275 | 10,776
Securities held to maturity, Unrealized Gains | 411 | 703
Securities held to maturity, fair value | 9,686 | 11,479
Mortgage-Backed Securities [Member] | 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 | 430,010 | 225,645
Securities available for sale, Unrealized Gains | 952 | 3,155
Securities available for sale, Unrealized Losses | 6,435 | 24
Securities available for sale | 424,527 | 228,776
Securities held to maturity, Amortized Cost | 8,706 | 5,858
Securities held to maturity, Unrealized Gains | 137 | 382
Securities held to maturity, Unrealized Losses | 144 |
Securities held to maturity, fair value | 8,699 | 6,240
Mortgage-Backed Securities [Member] | 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 | 122,266 | 22,107
Securities available for sale, Unrealized Gains | 298 | 830
Securities available for sale, Unrealized Losses | 2,082 |
Securities available for sale | 120,482 | 22,937
Securities held to maturity, Amortized Cost | 27,400 | 37,084
Securities held to maturity, Unrealized Gains | 706 | 1,578
Securities held to maturity, Unrealized Losses | 2 |
Securities held to maturity, fair value | $ 28,104 | $ 38,662

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