Bank Premises and Equipment (Premises and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total cost	$ 21,537	$ 23,667
Less accumulated depreciation	(10,463)	(9,674)
Net book value of bank premises and equipment	11,074	13,993
Assets held for sale	1,894
Total bank premises and equipment	12,968	13,993
Land [Member]
Property, Plant and Equipment [Line Items]
Total cost	2,315	2,906
Buildings [Member]
Property, Plant and Equipment [Line Items]
Total cost	9,517	10,789
Furniture, Fixtures, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	8,184	8,742
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	1,432	1,212
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 89	$ 18