Annual report pursuant to Section 13 and 15(d)

Common Shares and Warrants (Details 2)

v3.19.3
Common Shares and Warrants (Details 2) - Warrant - $ / shares
12 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Dividend yield 0.00% 0.00%
Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Expected volatility 1.00% 100.00%
Risk-free interest rate 2.31% 1.21%
Expected life 1 day 1 year 2 months 16 days
Estimated fair value per warrant $ 0.40
Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Expected volatility 117.00% 154.00%
Risk-free interest rate 2.87% 2.60%
Expected life 2 years 3 years
Estimated fair value per warrant $ 0.57 $ 1.48