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Warrants (Tables)
3 Months Ended
Mar. 31, 2018
Warrants and Rights Note Disclosure [Abstract]  
Schedule of Warrants Valuation Assumptions

The fair values for warrants issued have been estimated using the Black-Scholes option pricing model assuming no expected dividends and the following weighted average assumptions:

 

    2018  
Risk-free interest rate     2.17 %
Expected life (in years)     2.0  
Expected volatility     216 %
Weighted average fair value per share   $ 0.26  

Schedule of Stockholders' Equity Note, Warrants or Rights, Activity

The following table summarizes the share purchase warrants:

 

Outstanding, December 31, 2017     10,895,000  
Expired     (5,395,000 )
Issued     3,275,000  
Outstanding, March 31, 2018     8,775,000