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Investment Securities (Details) - Investments classified by maturity date - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Investment securities available-for-sale:
Due in one year or less, amortized cost	$ 4,119
Due in one year or less, fair value	4,131
Due after one year through five years, amortized cost	28,355
Due after one year through five years, fair value	28,644
Due after five years through ten years, amortized cost	26,247
Due after five years through ten years, fair value	27,000
Due after ten years, amortized cost	137,581
Due after ten years, fair value	139,293
Total	401,048	$ 419,947
Total	404,701
Residential mortgage pass-through securities [Member]
Investment securities available-for-sale:
Investment Securities Available-for-Sale: Amortized Cost	199,611
Investment Securities Available-for-Sale: Fair Value	200,496
Total	199,611	189,721
Commercial mortgage pass-through securities [Member]
Investment securities available-for-sale:
Investment Securities Available-for-Sale: Amortized Cost	4,995
Investment Securities Available-for-Sale: Fair Value	4,997
Total	4,995	3,919
Other Securities [Member]
Investment securities available-for-sale:
Investment Securities Available-for-Sale: Amortized Cost	140
Investment Securities Available-for-Sale: Fair Value	140
Total	$ 140	$ 2,990

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