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Income Taxes (Schedule Of Income Before Income Taxes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Taxes [Abstract]      
United States $ (13,756) $ (23,645) $ (14,984)
Foreign 41,025 79,186 85,989
Income before income taxes $ 27,269 $ 55,541 $ 71,005