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Income Taxes - Schedule of income before income tax, domestic and foreign (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Domestic operations $ (103,109) $ (146,247)
Foreign operations (6,944) 39,589
Loss before provision for income taxes $ (110,053) $ (106,658)