General form of registration statement for all companies including face-amount certificate companies

Stockholders' Deficit and Redeemable Convertible Series B and Series C Preferred Stock (Details 2)

v3.8.0.1
Stockholders' Deficit and Redeemable Convertible Series B and Series C Preferred Stock (Details 2) - Stock Option - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Dividend yield 0.00%
Volatility factor 75.00%
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