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Income Taxes, Income (Loss) Before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Taxes [Abstract]      
United States $ 344,280 $ (69,576) $ (5,289)
Foreign 2,489 (6,580) (11,474)
Income (loss) before income tax benefit (expense) $ 346,769 $ (76,156) $ (16,763)