Goodwill And Other Intangible Assets Goodwill and Other Intangible Assets (Rollforward of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Beginning balance	$ 76,196	$ 76,256
Goodwill, Purchase Accounting Adjustments	0	(60)
Ending balance	$ 76,196	$ 76,196