Investment Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Investment Securities [Abstract]
Held to Maturity, Due after one year through five years, Amortized Cost	$ 26,086
Held to Maturity, Due after five years through ten years, Amortized Cost	27,031
Held to Maturity, Due after ten years, Amortized Cost	14,132
Held-to-maturity Securities, Amortized Cost	67,249	$ 67,022
Held to Maturity, Due after one year through five years, Fair Value	26,585
Held to Maturity, Due after five years through ten years, Fair Value	27,055
Held to Maturity, Due after ten years, Fair Value	13,748
Held-to-maturity, Total investment securities, Fair Value	67,388	66,124
Available for Sale, Due in one year or less, Amortized Cost	15,222
Available for Sale, Due after one year through five years, Amortized Cost	42,350
Available for Sale, Due after five years through ten years, Amortized Cost	11,921
Available for Sale, Due after ten years, Amortized Cost	41,826
Available-for-sale Securities, Amortized Cost	111,319	116,830
Available for Sale, Due in one year or less, Fair Value	15,214
Available for Sale, Due after one year through five years, Fair Value	42,134
Available for Sale, Due after five years through ten years, Fair Value	11,728
Available for Sale, Due after ten years, Fair Value	40,824
Available for Sale, Total investment securities, Fair Value	$ 109,900	$ 115,184