Goodwill And Other Intangible Assets (Schedule Of Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Goodwill And Other Intangible Assets [Abstract]
Amortization of intangible assets	$ 2,368	$ 2,367	$ 7,120	$ 7,095
Amortization of capitalized purchased software costs			1,074	1,029
Amortization of debt costs			345	345
Total amortization			$ 8,539	$ 8,469