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Goodwill And Other Intangible Assets (Schedule Of Amortization Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Goodwill And Other Intangible Assets [Abstract]    
Amortization of intangible assets $ 2,381 $ 2,367
Amortization of capitalized purchased software costs 395 371
Amortization of debt costs 115 115
Total amortization $ 2,891 $ 2,853