Post-effective amendment to a registration statement that is not immediately effective upon filing

Stockholders'Deficit and Preferred Stock Subject to Redemption - Summary of weighted average assumptions for employee option (Details 1)

v3.3.1.900
Stockholders'Deficit and Preferred Stock Subject to Redemption - Summary of weighted average assumptions for employee option (Details 1) - Stock Option - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Dividend yield 0.00% 0.00%
Volatility factor 75.00% 75.00%
Risk-free interest rate   1.93%
Expected term (years)   6 years 6 months
Weighted-average fair value of options granted during the periods $ 2.69 $ 1.27
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate 1.68%  
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