Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details 1)

v3.19.2
Stockholders' Equity (Details 1)
6 Months Ended
Jun. 30, 2018
$ / shares
Dividend yield 0.00%
Expected life (years) 5 years 3 months 29 days
Minimum [Member]  
Fair value of common stock $ 10.92
Expected volatility 118.10%
Risk-free interest 2.87%
Maximum [Member]  
Fair value of common stock $ 13.26
Expected volatility 118.83%
Risk-free interest 3.00%