Quarterly report pursuant to Section 13 or 15(d)

Common Stock, Share-based Awards and Warrants - Warrants by Exercise Price (Details)

v3.5.0.2
Common Stock, Share-based Awards and Warrants - Warrants by Exercise Price (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Share-based Compensation, Shares Authorized under Equity Instruments Other Than Options, Exercise Price Range [Line Items]    
Amount of available for warrants $ 16.7 $ 16.7
Row 44 Warrants | Common stock warrants    
Share-based Compensation, Shares Authorized under Equity Instruments Other Than Options, Exercise Price Range [Line Items]    
Weighted average exercise price per warrant (usd per share) $ 8.79  
Number of warrants, as converted (in shares) 690  
Weighted average remaining life 0 years  
Row 44 Warrants | Series C-2 Warrants    
Share-based Compensation, Shares Authorized under Equity Instruments Other Than Options, Exercise Price Range [Line Items]    
Weighted average exercise price per warrant (usd per share) $ 8.62  
Number of warrants, as converted (in shares) 477  
Weighted average remaining life 0 years