Goodwill And Other Intangible Assets (Schedule Of Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Goodwill And Other Intangible Assets [Abstract]
Amortization of intangible assets	$ 2,367	$ 2,481	$ 4,733	$ 4,962
Amortization of capitalized purchased software costs			540	516
Amortization of debt costs			437	425
Total amortization			$ 5,710	$ 5,903