Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details 1)

v3.8.0.1
Stockholders' Equity (Details 1)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Expected years until exercise 3 years 6 months 3 years 6 months
Dividend yield 0.00% 0.00%
Minimum [Member]    
Expected stock volatility 78.40% 70.90%
Risk free interest rate 2.06% 1.53%
Maximum [Member]    
Expected stock volatility 79.90% 72.20%
Risk free interest rate 2.45% 1.79%