Annual report pursuant to Section 13 and 15(d)

Income Taxes (United States And Foreign Components Of Income From Continuing Operations Before Income Taxes) (Details)

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Income Taxes (United States And Foreign Components Of Income From Continuing Operations Before Income Taxes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Taxes [Abstract]      
U.S. $ (59,096) $ 29,638 $ (2,170)
Foreign 849 (653) (852)
Total $ (58,247) $ 28,985 $ (3,022)