Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Deficit and Redeemable Convertible Series B Preferred Stock - Summary of weighted average assumptions for employee option (Details 1)

v3.5.0.2
Stockholders' Deficit and Redeemable Convertible Series B Preferred Stock - Summary of weighted average assumptions for employee option (Details 1) - Stock Option - $ / shares
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Dividend yield
Volatility factor 75.00%
Risk-free interest rate  
Weighted-average fair value of options granted during the periods $ 2.69
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate   1.65%
Expected term (years)   6 years 3 months
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate   1.85%
Expected term (years)   6 years 6 months