Investment Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Investment Securities [Abstract]
Held to Maturity, Due after one year through five years, Amortized Cost	$ 23,830
Held to Maturity, Due after five years through ten years, Amortized Cost	29,210
Held to Maturity, Due after ten years, Amortized Cost	15,098
Held-to-maturity Securities, Amortized Cost	68,138	$ 67,022
Held to Maturity, Due after one year through five years, Fair Value	24,344
Held to Maturity, Due after five years through ten years, Fair Value	28,930
Held to Maturity, Due after ten years, Fair Value	14,363
Held-to-maturity, Total investment securities, Fair Value	67,637	66,124
Available for Sale, Due in one year or less, Amortized Cost	19,708
Available for Sale, Due after one year through five years, Amortized Cost	46,374
Available for Sale, Due after five years through ten years, Amortized Cost	8,282
Available for Sale, Due after ten years, Amortized Cost	37,415
Available-for-sale Securities, Amortized Cost	111,779	116,830
Available for Sale, Due in one year or less, Fair Value	19,689
Available for Sale, Due after one year through five years, Fair Value	46,113
Available for Sale, Due after five years through ten years, Fair Value	8,139
Available for Sale, Due after ten years, Fair Value	36,343
Available for Sale, Total investment securities, Fair Value	$ 110,284	$ 115,184