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Income Taxes - Income before provision (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income (loss) from operations before income taxes      
Income (loss) before provision for income taxes $ (232,218) $ 486,791 $ 115,347
U.S.      
Income (loss) from operations before income taxes      
Income (loss) before provision for income taxes (16,609) 712,486 478,050
Non-U.S.      
Income (loss) from operations before income taxes      
Income (loss) before provision for income taxes $ (215,609) $ (225,695) $ (362,703)