Securities Available-For-Sale (Details) - Investments classified by maturity date - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Securities available-for-sale:
Due in one year or less, amortized cost	$ 6,775
Due in one year or less, fair value	6,801
Due after one year through five years, amortized cost	30,824
Due after one year through five years, fair value	31,197
Due after five years through ten years, amortized cost	39,489
Due after five years through ten years, fair value	40,174
Due after ten years, amortized cost	170,373
Due after ten years, fair value	170,717
Total, amortized cost	399,418	$ 351,928
Total, fair value	400,516
Residential mortgage pass-through securities [Member]
Securities available-for-sale:
Total, amortized cost	133,517	72,922
Total, fair value	133,164
Commercial mortgage pass-through securities [Member]
Securities available-for-sale:
Total, amortized cost	4,088	4,186
Total, fair value	4,130
Equity Securities [Member]
Securities available-for-sale:
Total, amortized cost	376	376
Total, fair value	630
Other Securities [Member]
Securities available-for-sale:
Total, amortized cost	13,976	$ 14,739
Total, fair value	$ 13,703