Commitments and Contingencies (Interest rate locks) (Details) - Interest Rate Lock Commitments [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Commitments [Line Items]
Notional Amount	$ 15,249	$ 20,735
Derivative, Fair Value, Net	187	139
Derivative Liability, Fair Value, Gross Liability	(15)	(90)
Derivative Asset, Fair Value, Gross Asset	202	229
Other Liabilities [Member]
Other Commitments [Line Items]
Notional Amount	2,939	8,066
Other Assets [Member]
Other Commitments [Line Items]
Notional Amount	$ 12,310	$ 12,669