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Investment Securities (Gross Unrealized Losses and Fair Value by Length of Continuous Unrealized Loss Position) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
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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 | $ 66,991 | $ 26,788
Available-for-sale securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 1,005 | 150
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, fair value | 223 | 236
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 2 | 1
Available-for-sale securities, continuous unrealized loss position, fair value | 67,214 | 27,024
Available-for-sale securities, continuous unrealized loss position, unrealized losses | 1,007 | 151
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, fair value | 76,402 | 12,237
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 1,166 | 63
Held-to-maturity securities, continuous unrealized loss position, fair value | 76,402 | 12,237
Held-to-maturity securities, continuous unrealized loss position, unrealized losses | 1,166 | 63
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 | 49,427 | 11,869
Available-for-sale securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 569 | 68
Available-for-sale securities, continuous unrealized loss position, fair value | 49,427 | 11,869
Available-for-sale securities, continuous unrealized loss position, unrealized losses | 569 | 68
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, fair value | 49,863 | 5,093
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 700 | 18
Held-to-maturity securities, continuous unrealized loss position, fair value | 49,863 | 5,093
Held-to-maturity securities, continuous unrealized loss position, unrealized losses | 700 | 18
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 | 17,564 | 14,919
Available-for-sale securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 436 | 82
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, fair value | 223 | 236
Available-for-sale securities, continuous unrealized loss position, more than 12 Months, unrealized losses | 2 | 1
Available-for-sale securities, continuous unrealized loss position, fair value | 17,787 | 15,155
Available-for-sale securities, continuous unrealized loss position, unrealized losses | 438 | 83
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, fair value | 22,082 | 6,646
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 423 | 43
Held-to-maturity securities, continuous unrealized loss position, fair value | 22,082 | 6,646
Held-to-maturity securities, continuous unrealized loss position, unrealized losses | 423 | 43
Other debt securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, fair value | 4,457 | 498
Held-to-maturity securities, continuous unrealized loss position, less than 12 Months, unrealized losses | 43 | 2
Held-to-maturity securities, continuous unrealized loss position, fair value | 4,457 | 498
Held-to-maturity securities, continuous unrealized loss position, unrealized losses | $ 43 | $ 2

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