Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
Common Stock, Stock-Based Awards and Warrants - Warrants by Exercise Price (Details) - Row 44 Warrants
shares in Thousands
12 Months Ended
Dec. 31, 2016
$ / shares
shares
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 | $ / shares $ 8.79
Number of Warrants (in thousands) | shares 689
Weighted Average Remaining Life (in years) 2 months 15 days
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 | $ / shares $ 8.62
Number of Warrants (in thousands) | shares 477
Weighted Average Remaining Life (in years) 5 months 4 days