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Investment Securities (Unrealized Gain (Loss) on Investments) (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | $ 52,558 | $ 116,027
Available-for-sale debt securities, Unrealized Gains | 111 | 21
Available-for-sale debt securities, Unrealized Losses | 250 | 4,125
Available for sale debt securities, Fair Value | 52,419 | 111,923
Held-to-maturity debt securities, Amortized Cost | 170,472 | 168,370
Held-to-maturity debt securities, Unrealized Gains | 3,389 | 517
Held-to-maturity debt securities, Unrealized Losses | 139 | 2,305
Held-to-maturity debt securities, Fair Value | 173,722 | 166,582
Available-for-sale securities and Held-to-maturity debt securities, Amortized Cost | 223,030 | 284,397
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Gains | 3,500 | 538
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Losses | 389 | 6,430
Available-for-sale securities and Held-to-maturity debt securities, Fair Value | 226,141 | 278,505
Available-for-sale securities and Held-to-maturity debt securities, Fair Value | 226,141 | 278,505
U.S. Treasury and U.S. government agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 32,611 | 43,270
Available-for-sale debt securities, Unrealized Gains | 33 | 10
Available-for-sale debt securities, Unrealized Losses | 111 | 1,708
Available for sale debt securities, Fair Value | 32,533 | 41,572
Held-to-maturity debt securities, Amortized Cost | 19,421 | 16,985
Held-to-maturity debt securities, Unrealized Gains | 39 | 14
Held-to-maturity debt securities, Unrealized Losses | 20 | 143
Held-to-maturity debt securities, Fair Value | 19,440 | 16,856
Mortgage-backed U.S. Government Agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 16,638 | 39,865
Available-for-sale debt securities, Unrealized Gains | 8 |
Available-for-sale debt securities, Unrealized Losses | 135 | 1,016
Available for sale debt securities, Fair Value | 16,511 | 38,849
Held-to-maturity debt securities, Amortized Cost | 67,472 | 65,812
Held-to-maturity debt securities, Unrealized Gains | 521 | 46
Held-to-maturity debt securities, Unrealized Losses | 119 | 1,310
Held-to-maturity debt securities, Fair Value | 67,874 | 64,548
State and political subdivision obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 1,059 | 30,642
Available-for-sale debt securities, Unrealized Gains |  | 11
Available-for-sale debt securities, Unrealized Losses | 4 | 1,397
Available for sale debt securities, Fair Value | 1,055 | 29,256
Held-to-maturity debt securities, Amortized Cost | 82,051 | 84,034
Held-to-maturity debt securities, Unrealized Gains | 2,820 | 457
Held-to-maturity debt securities, Unrealized Losses |  | 842
Held-to-maturity debt securities, Fair Value | 84,871 | 83,649
Corporate debt securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available-for-sale debt securities, Amortized Cost | 2,250 | 2,250
Available-for-sale debt securities, Unrealized Gains | 70 |
Available-for-sale debt securities, Unrealized Losses |  | 4
Available for sale debt securities, Fair Value | 2,320 | 2,246
Held-to-maturity debt securities, Amortized Cost | 1,528 | 1,539
Held-to-maturity debt securities, Unrealized Gains | 9 |
Held-to-maturity debt securities, Unrealized Losses |  | 10
Held-to-maturity debt securities, Fair Value | $ 1,537 | $ 1,529

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