Annual report pursuant to Section 13 and 15(d)

Provision for Income Taxes - Schedule of loss before provision for income taxes by jurisdiction (Details)

v3.8.0.1
Provision for Income Taxes - Schedule of loss before provision for income taxes by jurisdiction (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Jurisdiction      
Domestic $ (499,803) $ (328,414) $ (163,460)
Foreign (19,382) (14,792) (7,751)
Loss before benefit from income taxes $ (519,185) $ (343,206) $ (171,211)