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SHAREHOLDERS' EQUITY (Weighted Average Assumptions for the Valuation of Purchase Rights) (Details)
6 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Employee Share Purchase Plan [Member]    
Weighted average assumptions    
Risk-free interest rate 0.19% 0.00%
Expected life of share purchase options 6 months  
Expected annualized volatility 61.26% 0.00%
Dividend 0.00% 0.00%
Stock Options Plan [Member]    
Weighted average assumptions    
Risk-free interest rate 0.39% 1.54%
Expected life of share purchase options 10 years 10 years
Expected annualized volatility 78.05% 77.00%
Dividend 0.00% 0.00%