Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY - Schedule of assumptions used (Details)

v3.20.2
STOCKHOLDERS' EQUITY - Schedule of assumptions used (Details)
9 Months Ended
May 31, 2020
May 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected dividend yield 0.00% 0.00%
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term in years 5 years 3 months 18 days 1 year
Expected volatility 64.00% 69.00%
Risk-free interest rate 0.30% 2.30%
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term in years 5 years 10 months 24 days 3 years
Expected volatility 120.00% 87.00%
Risk-free interest rate 1.70% 3.00%