Investment Securities (Details) - Investments classified by maturity date - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investment securities available-for-sale:
Due in one year or less, amortized cost	$ 10,486
Due in one year or less, fair value	10,541
Due after one year through five years, amortized cost	19,968
Due after one year through five years, fair value	20,180
Due after five years through ten years, amortized cost	18,316
Due after five years through ten years, fair value	18,797
Due after ten years, amortized cost	155,379
Due after ten years, fair value	160,474
Total	477,326	$ 401,048
Total	487,955
Residential mortgage pass-through securities [Member]
Investment securities available-for-sale:
Investment Securities Available-for-Sale: Amortized Cost	266,114
Investment Securities Available-for-Sale: Fair Value	270,884
Total	266,114	199,611
Commercial mortgage pass-through securities [Member]
Investment securities available-for-sale:
Investment Securities Available-for-Sale: Amortized Cost	6,906
Investment Securities Available-for-Sale: Fair Value	6,922
Total	6,906	4,995
Other Securities [Member]
Investment securities available-for-sale:
Investment Securities Available-for-Sale: Amortized Cost	157
Investment Securities Available-for-Sale: Fair Value	157
Total	$ 157	$ 140

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