XML 41 R30.htm IDEA: XBRL DOCUMENT v3.19.1
SHAREHOLDERS' EQUITY (Tables)
3 Months Ended
Mar. 31, 2019
SHAREHOLDERS' EQUITY  
Schedule of Black-Scholes pricing model to determine the fair value of warrants

 

 

 

 

Risk-free interest rate

 

2.30

%

Dividend yield

 

0.00

%

Volatility factor of the expected market price of common stock

 

50

%

Weighted-average expected life

 

3 years

 

Weighted-average grant date fair value

$

0.43