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Warrants (Tables)
3 Months Ended
Sep. 30, 2017
Warrants Tables  
Summary of expense warrants using assumptions

The expense of these warrants was calculated using the Black-Scholes option pricing model using the following assumptions:

  

Dividend yield   $ 0  
Expected volatility     1.20 %
Risk free interest     0.50 %
Expected life     3.5 years