Quarterly report pursuant to Section 13 or 15(d)

Stockholders’ Deficit (Details)

v3.10.0.1
Stockholders’ Deficit (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Nov. 13, 2017
Feb. 06, 2017
Jan. 31, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Jun. 27, 2017
Jun. 26, 2017
Debt Instrument [Line Items]                
Net proceeds from private placement       $ 0 $ 121,604      
Common stock, shares authorized (in shares)       400,000,000   400,000,000 400,000,000 350,000,000
Public Stock Offering                
Debt Instrument [Line Items]                
Shares sold in private placement (in shares) 21,705,426   20,325,204          
Shares issued (in dollars per share) $ 2.58   $ 6.15          
Net proceeds from private placement $ 52,200 $ 121,600