Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details 3)

v3.8.0.1
Stockholders' Equity (Details 3)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected dividends 0.00% 0.00%
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk free interest rate 1.81% 1.14%
Expected term (years) 5 years 14 days 5 years 14 days
Expected volatility 81.94% 89.53%
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk free interest rate 2.43% 2.06%
Expected term (years) 6 years 6 months 6 years 6 months
Expected volatility 87.00% 89.95%