Annual report pursuant to Section 13 and 15(d)

Income taxes - Loss before Income Taxes (Details)

v3.20.4
Income taxes - Loss before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income taxes      
Loss before income taxes $ (129,930) $ (136,923) $ (95,017)
U.S.      
Income taxes      
Loss before income taxes (1,359) (494) (1,650)
U.K.      
Income taxes      
Loss before income taxes $ (128,571) $ (136,429) $ (93,367)