Quarterly report pursuant to Section 13 or 15(d)

Common Shares and Warrants (Details 2)

v3.20.2
Common Shares and Warrants (Details 2)
9 Months Ended
May 31, 2020
$ / 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 95.00%
Risk-free interest rate 0.35%
Maximum  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected volatility 96.00%
Risk-free interest rate 1.68%
Warrant  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Dividend yield 0.00%
Warrant | Minimum  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected volatility 91.00%
Risk-free interest rate 0.36%
Expected life 2 years
Estimated fair value per warrant $ 0.28
Warrant | Maximum  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Expected volatility 94.00%
Risk-free interest rate 2.87%
Expected life 5 years
Estimated fair value per warrant $ 0.54