Investment Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investment Securities [Abstract]
Held to Maturity, Due after one year through five years, Amortized Cost	$ 23,862
Held to Maturity, Due after five years through ten years, Amortized Cost	27,896
Held to Maturity, Due after ten years, Amortized Cost	15,264
Held-to-maturity Securities, Amortized Cost	67,022	$ 67,829
Held to Maturity, Due after one year through five years, Fair Value	24,327
Held to Maturity, Due after five years through ten years, Fair Value	27,366
Held to Maturity, Due after ten years, Fair Value	14,431
Held-to-maturity, Total investment securities, Fair Value	66,124	68,431
Available for Sale, Due in one year or less, Amortized Cost	19,731
Available for Sale, Due after one year through five years, Amortized Cost	49,398
Available for Sale, Due after five years through ten years, Amortized Cost	8,752
Available for Sale, Due after ten years, Amortized Cost	38,949
Available-for-sale Securities, Amortized Cost	116,830	153,559
Available for Sale, Due in one year or less, Fair Value	19,720
Available for Sale, Due after one year through five years, Fair Value	49,088
Available for Sale, Due after five years through ten years, Fair Value	8,608
Available for Sale, Due after ten years, Fair Value	37,768
Available for Sale, Total investment securities, Fair Value	$ 115,184	$ 152,379