Annual report pursuant to Section 13 and 15(d)

Income Taxes - Net Loss Before Income Tax Expense (Details)

v3.10.0.1
Income Taxes - Net Loss Before Income Tax Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]      
U.S. $ (40,252) $ (26,578) $ (13,556)
Foreign 0 0 0
Total $ (40,252) $ (26,578) $ (13,556)