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Investment Securities (Details) - Investments classified by maturity date - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Investment securities available-for-sale: |  |
Due in one year or less, amortized cost | $ 2,355 |
Due in one year or less, fair value | 2,358 |
Due after one year through five years, amortized cost | 36,338 |
Due after one year through five years, fair value | 35,953 |
Due after five years through ten years, amortized cost | 28,067 |
Due after five years through ten years, fair value | 28,375 |
Due after ten years, amortized cost | 156,557 |
Due after ten years, fair value | 153,280 |
Total | 419,947 | $ 436,868
Total | 412,034 |
Residential Mortgage Backed Securities [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Amortized Cost | 189,721 |
Investment Securities Available-for-Sale: Fair Value | 185,204 |
Total | 189,721 | 183,509
Commercial Mortgage Backed Securities [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Amortized Cost | 3,919 |
Investment Securities Available-for-Sale: Fair Value | 3,874 |
Total | 3,919 | 4,054
Other Securities [Member] |  |
Investment securities available-for-sale: |  |
Investment Securities Available-for-Sale: Amortized Cost | 2,990 |
Investment Securities Available-for-Sale: Fair Value | 2,990 |
Total | $ 2,990 | $ 3,422

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