Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details 4)

v3.19.1
Stockholders' Equity (Details 4)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dividend yield 0.00% 0.00%
Expected lives (in years) 5 years 9 months 18 days 6 years
Minimum [Member]    
Expected Volatility 51.58% 51.77%
Risk free Interest rates 2.77% 2.04%
Maximum [Member]    
Expected Volatility 54.21% 52.98%
Risk free Interest rates 3.00% 2.25%