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Investment Securities (Unrealized Gain (Loss) on Investments) (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | $ 8,361 | $ 37,170
Available-for-sale debt securities, Unrealized Gains | 2 | 22
Available-for-sale debt securities, Unrealized Losses | 26 | 183
Available-for-sale debt securities, Fair Value | 8,337 | 37,009
Held-to-maturity debt securities, Amortized Cost | 140,474 | 136,477
Held-to-maturity debt securities, Unrealized Gains | 4,291 | 1,334
Held-to-maturity debt securities, Unrealized Losses | 57 | 335
Held-to-maturity debt securities, Fair Value | 144,708 | 137,476
Available-for-sale securities and Held-to-maturity debt securities, Amortized Cost | 148,835 | 173,647
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Gains | 4,293 | 1,356
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Losses | 83 | 518
Available-for-sale securities and Held-to-maturity debt securities, Fair Value | 153,045 | 174,485
U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost |  | 22,894
Available-for-sale debt securities, Unrealized Gains |  | 6
Available-for-sale debt securities, Unrealized Losses |  | 70
Available-for-sale debt securities, Fair Value |  | 22,830
U.S. Treasury and U.S. government agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Held-to-maturity debt securities, Amortized Cost | 20,003 | 50,210
Held-to-maturity debt securities, Unrealized Gains | 138 | 46
Held-to-maturity debt securities, Unrealized Losses |  | 220
Held-to-maturity debt securities, Fair Value | 20,141 | 50,036
Mortgage-backed U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 2 | 12,996
Available-for-sale debt securities, Unrealized Gains |  | 7
Available-for-sale debt securities, Unrealized Losses |  | 113
Available-for-sale debt securities, Fair Value | 2 | 12,890
Held-to-maturity debt securities, Amortized Cost | 45,793 | 42,098
Held-to-maturity debt securities, Unrealized Gains | 1,005 | 95
Held-to-maturity debt securities, Unrealized Losses | 21 | 102
Held-to-maturity debt securities, Fair Value | 46,777 | 42,091
State and political subdivision obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost |  | 30
Available-for-sale debt securities, Fair Value |  | 30
Held-to-maturity debt securities, Amortized Cost | 64,151 | 44,169
Held-to-maturity debt securities, Unrealized Gains | 2,952 | 1,193
Held-to-maturity debt securities, Unrealized Losses | 19 | 13
Held-to-maturity debt securities, Fair Value | 67,084 | 45,349
Corporate debt securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 8,359 | 1,250
Available-for-sale debt securities, Unrealized Gains | 2 | 9
Available-for-sale debt securities, Unrealized Losses | 26 |
Available-for-sale debt securities, Fair Value | 8,335 | $ 1,259
Held-to-maturity debt securities, Amortized Cost | 10,527 |
Held-to-maturity debt securities, Unrealized Gains | 196 |
Held-to-maturity debt securities, Unrealized Losses | 17 |
Held-to-maturity debt securities, Fair Value | $ 10,706 |

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