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Investment Securities (Unrealized Gain (Loss) on Investments) (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | $ 27,396 | $ 37,170
Available-for-sale debt securities, Unrealized Gains | 46 | 22
Available-for-sale debt securities, Unrealized Losses | 22 | 183
Available-for-sale debt securities, Fair Value | 27,420 | 37,009
Held-to-maturity debt securities, Amortized Cost | 167,963 | 136,477
Held-to-maturity debt securities, Unrealized Gains | 2,556 | 1,334
Held-to-maturity debt securities, Unrealized Losses | 120 | 335
Held-to-maturity debt securities, Fair Value | 170,399 | 137,476
Available-for-sale securities and Held-to-maturity debt securities, Amortized Cost | 195,359 | 173,647
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Gains | 2,602 | 1,356
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Losses | 142 | 518
Available-for-sale securities and Held-to-maturity debt securities, Fair Value | 197,819 | 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 | 68,321 | 50,210
Held-to-maturity debt securities, Unrealized Gains | 288 | 46
Held-to-maturity debt securities, Unrealized Losses | 18 | 220
Held-to-maturity debt securities, Fair Value | 68,591 | 50,036
Mortgage-backed U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 3,671 | 12,996
Available-for-sale debt securities, Unrealized Gains | 6 | 7
Available-for-sale debt securities, Unrealized Losses | 15 | 113
Available-for-sale debt securities, Fair Value | 3,662 | 12,890
Held-to-maturity debt securities, Amortized Cost | 44,940 | 42,098
Held-to-maturity debt securities, Unrealized Gains | 916 | 95
Held-to-maturity debt securities, Unrealized Losses | 24 | 102
Held-to-maturity debt securities, Fair Value | 45,832 | 42,091
State and political subdivision obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 16,092 | 30
Available-for-sale debt securities, Unrealized Gains | 27 |
Available-for-sale debt securities, Unrealized Losses | 1 |
Available-for-sale debt securities, Fair Value | 16,118 | 30
Held-to-maturity debt securities, Amortized Cost | 50,603 | 44,169
Held-to-maturity debt securities, Unrealized Gains | 1,295 | 1,193
Held-to-maturity debt securities, Unrealized Losses | 78 | 13
Held-to-maturity debt securities, Fair Value | 51,820 | 45,349
Corporate debt securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 7,633 | 1,250
Available-for-sale debt securities, Unrealized Gains | 13 | 9
Available-for-sale debt securities, Unrealized Losses | 6 |
Available-for-sale debt securities, Fair Value | 7,640 | $ 1,259
Held-to-maturity debt securities, Amortized Cost | 4,099 |
Held-to-maturity debt securities, Unrealized Gains | 57 |
Held-to-maturity debt securities, Fair Value | $ 4,156 |

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