Investment Securities (Investment Classified By Contractual Maturity Date) (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Investment Securities [Abstract]
Amortized cost: Due in one year or less	$ 4,006
Amortized cost: Due after one year through five years	14,356
Amortized cost: Due after five years through ten years	1,662
Amortized cost: Due after ten years	36,986
Total debt securities, Amortized Cost	57,010
MBS - GSE residential, Amortized cost	70,639
Total available-for-sale debt securities, Amortized cost	127,649
Fair value: Due in one year or less	4,017
Fair value: Due after one year through five years	14,259
Fair value: Due after five years through ten years	1,794
Fair value: Due after ten years	38,397
Total debt securities, Fair value	58,467
MBS - GSE residential, Fair value	70,937
Total available-for-sale debt securities, Fair value	$ 129,404