Premises, Furniture, and Equipment (Schedule of Capital Leased Assets) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) branch_building	Dec. 31, 2016 USD ($)
Property, Plant and Equipment [Abstract]
Number of branch buildings under a capital lease | branch_building	3
Lease expiration date	Dec. 31, 2033
Capital Leases	$ 4,219	$ 4,219
Less: Accumulated Depreciation	(1,312)	(1,102)
Total	$ 2,907	$ 3,117