Quarterly report pursuant to Section 13 or 15(d)

Equity (Details 2)

v3.19.1
Equity (Details 2)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Employee Stock Option [Member]    
Dividend rate 0.00% 0.00%
Terms (in years) 5 years 5 years
Volatility 150.61% 185.28%
Risk-free interest rate   2.25%
Employee Stock Option [Member] | Minimum [Member]    
Risk-free interest rate 2.37%  
Employee Stock Option [Member] | Maximum [Member]    
Risk-free interest rate 2.49%  
Non Employee Stock Option [Member]    
Dividend rate 0.00% 0.00%
Terms (in years)   3 years
Non Employee Stock Option [Member] | Minimum [Member]    
Terms (in years) 2 years 7 months 2 days  
Volatility 150.38% 183.23%
Risk-free interest rate 2.21% 2.29%
Non Employee Stock Option [Member] | Maximum [Member]    
Terms (in years) 4 years 6 months  
Volatility 154.33% 188.29%
Risk-free interest rate 2.53% 2.37%