Premises and Equipment (Disclosure of Long Lived Assets Held-for-sale) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Movement in Property, Plant and Equipment [Roll Forward]
Beginning balance	$ 637	$ 637
Additions	2,006	0
Write-downs	(529)	0
Sales	(1,970)	0
Ending balance	$ 144	$ 637