Investment Securities (Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Amortized Cost
Due in one year or less	$ 3,508
Due after one year through five years	20,639
Due after five years through ten years	34,307
Due after ten years	54,316
Total	112,770
Fair Value
Due in one year or less	3,502
Due after one year through five years	20,747
Due after five years through ten years	34,422
Due after ten years	54,281
Available for sale, at fair value	$ 112,952	$ 103,794
Yield
Due in one year or less (percentage)	3.01%
Due after one year through five years (percentage)	2.18%
Due after five years through ten years (percentage)	2.60%
Due after ten years (percentage)	2.62%
Total (percentage)	2.54%
Carrying Value
Due in one year or less	$ 33,723
Due after one year through five years	17,087
Due after five years through ten years	20,523
Due after ten years	53,589
Carrying Value, Total	124,922	126,810
Fair Value
Due in one year or less	33,739
Due after one year through five years	17,756
Due after five years through ten years	21,077
Due after ten years	54,503
Held to maturity, fair value	$ 127,075	$ 128,559
Yield
Due in one year or less (percentage)	1.56%
Due after one year through five years (percentage)	4.57%
Due after five years through ten years (percentage)	3.50%
Due after ten years (percentage)	3.26%
Total (percentage)	3.02%