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Investment Securities (Details) - Investments classified by maturity date - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
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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