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Income Taxes (Schedule Of Income Tax Expense Benefit) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Taxes [Abstract]      
Current: Federal $ (2,460) $ 48 $ 402
Current: State 445 80 246
Current: Foreign 707 2,041 2,009
Current: Income tax expense (1,308) 2,169 2,657
Deferred: Federal 1,721 (850) (2,188)
Deferred: State 384 (131) (154)
Deferred: Foreign (1,289) (1,264) (3,866)
Deferred: Income tax expense 816 (2,245) (6,208)
Total income tax benefit $ (492) $ (76) $ (3,551)