Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details 2)

v3.19.2
Stockholders' Equity (Details 2)
9 Months Ended
Sep. 30, 2018
$ / shares
Dividend yield 0.00%
Minimum [Member]  
Fair value of common stock $ 10.92
Expected volatility 111.81%
Risk-free interest 2.85%
Expected life (years) 5 years 43 days 19 hours 12 minutes
Maximum [Member]  
Fair value of common stock $ 13.26
Expected volatility 143.50%
Risk-free interest 3.00%
Expected life (years) 5 years 3 months 29 days