Securities Available-for-Sale (Details) - Investments classified by maturity date - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Securities Available-for-Sale:
Due in one year or less, amortized cost	$ 5,476
Due in one year or less, fair value	5,521
Due after one year through five years, amortized cost	23,961
Due after one year through five years, fair value	23,716
Due after five years through ten years, amortized cost	25,669
Due after five years through ten years, fair value	26,255
Due after ten years, amortized cost	146,471
Due after ten years, fair value	149,949
Total, amortized cost	409,973	$ 401,048
Total, fair value	418,426	404,701
Residential mortgage pass-through securities [Member]
Securities Available-for-Sale:
Total, amortized cost	206,186	199,611
Total, fair value	210,570	200,496
Commercial mortgage pass-through securities [Member]
Securities Available-for-Sale:
Total, amortized cost	2,026	4,995
Total, fair value	2,231	4,997
Other securities [Member]
Securities Available-for-Sale:
Total, amortized cost	184	140
Total, fair value	$ 184	$ 140