Goodwill And Other Intangible Assets (Schedule Of Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Goodwill And Other Intangible Assets [Abstract]
Amortization of intangible assets	$ 2,736	$ 3,170	$ 7,698	$ 8,945
Amortization of capitalized purchased software costs			798	867
Amortization of debt costs			643	567
Total amortization			$ 9,139	$ 10,379