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Income Taxes (Schedule Of Income Before Income Taxes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Taxes [Abstract]      
United States $ (23,645) $ (14,984) $ 9,994
Foreign 79,186 85,989 59,416
Income before income taxes $ 55,541 $ 71,005 $ 69,410