Securities Available-for-Sale (Details) - Investments classified by maturity date - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Securities Available-for-Sale:
Due in one year or less, amortized cost	$ 4,166
Due in one year or less, fair value	4,192
Due after one year through five years, amortized cost	29,411
Due after one year through five years, fair value	29,449
Due after five years through ten years, amortized cost	22,538
Due after five years through ten years, fair value	23,126
Due after ten years, amortized cost	147,361
Due after ten years, fair value	148,826
Total, amortized cost	440,238	$ 419,947
Total, fair value	441,911
Residential mortgage pass-through securities [Member]
Securities Available-for-Sale:
Total, amortized cost	230,064	189,721
Total, fair value	229,542
Commercial mortgage pass-through securities [Member]
Securities Available-for-Sale:
Total, amortized cost	5,748	3,919
Total, fair value	5,826
Other securities [Member]
Securities Available-for-Sale:
Total, amortized cost	950	$ 2,990
Total, fair value	$ 950