Goodwill And Other Intangible Assets (Schedule Of Amortization Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill And Other Intangible Assets [Abstract]
Amortization of intangible assets	$ 11,838	$ 4,962	$ 3,781
Amortization of capitalized purchased software costs	1,147	1,785	1,222
Amortization of debt costs	756	103	187
Total amortization	$ 13,741	$ 6,850	$ 5,190