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Investment Securities (Gross Unrealized Losses and Fair Value by Length of Continuous Unrealized Loss Position) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value | $ 30,540 | $ 41,412
Available-for-sale securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 1,952 | 594
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, fair value | 54,920 | 20,930
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 11,516 | 669
Available-for-sale securities, continuous unrealized loss position, fair value | 85,460 | 62,342
Available-for-sale securities, continuous unrealized loss position, unrealized losses | 13,468 | 1,263
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, fair value | 28,024 | 291,677
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 4,629 | 2,850
Held-to-maturity securities, continuous unrealized loss position, more than 12 Months, fair value | 473,121 | 26,283
Held-to-maturity securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 64,945 | 638
Held-to-maturity securities, continuous unrealized loss position, fair value | 501,145 | 317,960
Held-to-maturity securities, continuous unrealized loss position, unrealized losses | 69,574 | 3,488
Mortgage-backed [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value | 28,663 | 39,851
Available-for-sale securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 1,809 | 593
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, fair value | 37,083 | 3,562
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 7,757 | 36
Available-for-sale securities, continuous unrealized loss position, fair value | 65,746 | 43,413
Available-for-sale securities, continuous unrealized loss position, unrealized losses | 9,566 | 629
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, fair value | 16,923 | 226,918
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 3,607 | 1,836
Held-to-maturity securities, continuous unrealized loss position, more than 12 Months, fair value | 338,740 | 14,564
Held-to-maturity securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 51,435 | 412
Held-to-maturity securities, continuous unrealized loss position, fair value | 355,663 | 241,482
Held-to-maturity securities, continuous unrealized loss position, unrealized losses | 55,042 | 2,248
U.S. Government Agencies [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value |  | 1,561
Available-for-sale securities, continuous unrealized loss position, less than 12 Months, unrealized losses |  | 1
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, fair value | 17,837 | 17,368
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 3,759 | 633
Available-for-sale securities, continuous unrealized loss position, fair value | 17,837 | 18,929
Available-for-sale securities, continuous unrealized loss position, unrealized losses | 3,759 | 634
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, fair value | 4,861 | 64,268
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 762 | 1,005
Held-to-maturity securities, continuous unrealized loss position, more than 12 Months, fair value | 129,485 | 11,719
Held-to-maturity securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 13,099 | 226
Held-to-maturity securities, continuous unrealized loss position, fair value | 134,346 | 75,987
Held-to-maturity securities, continuous unrealized loss position, unrealized losses | 13,861 | 1,231
Other Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value | 1,877 |
Available-for-sale securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 143 |
Available-for-sale securities, continuous unrealized loss position, fair value | 1,877 |
Available-for-sale securities, continuous unrealized loss position, unrealized losses | 143 |
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, fair value | 6,240 | 491
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 260 | 9
Held-to-maturity securities, continuous unrealized loss position, more than 12 Months, fair value | 4,113 |
Held-to-maturity securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 387 |
Held-to-maturity securities, continuous unrealized loss position, fair value | 10,353 | 491
Held-to-maturity securities, continuous unrealized loss position, unrealized losses | 647 | $ 9
States and Political Subdivisions [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, fair value | 783 |
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 24 |
Available-for-sale securities, continuous unrealized loss position, fair value | 783 |
Available-for-sale securities, continuous unrealized loss position, unrealized losses | $ 24 |

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