Quarterly report pursuant to Section 13 or 15(d)

Common Shares and Warrants (Details 2)

v3.19.2
Common Shares and Warrants (Details 2)
9 Months Ended
May 31, 2019
$ / shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected life 5 years
Dividend yield 0.00%
Minimum  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected volatility 103.00%
Risk-free interest rate 2.19%
Maximum  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected volatility 144.00%
Risk-free interest rate 2.89%
Warrant  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected life 2 years
Dividend yield 0.00%
Warrant | Minimum  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected volatility 104.00%
Risk-free interest rate 2.31%
Estimated fair value per warrant $ 0.52
Warrant | Maximum  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected volatility 117.00%
Risk-free interest rate 2.87%
Estimated fair value per warrant $ 0.57