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SHAREHOLDERS' EQUITY (Summary of Stock Option Activity) (Details) - $ / shares
 9 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Sep. 30, 2020
Number of Options      
Beginning balance (in shares) 5,309,584 1,122,461 1,122,461
Options granted (in shares) 1,889,646 4,218,000 4,218,000
Options exercised (in shares) (323,610)   (416)
Options expired/forfeited (in shares) (72,390)   (30,461)
Ending balance (in shares) 6,803,230   5,309,584
Balance exercisable (in shares) 2,496,961    
Weighted Average Exercise Price      
Beginning balance (in dollars per share) $ 3.42 $ 4.59 $ 4.59
Options granted (in dollars per share) 9.87   3.31
Options exercised (in dollars per share) (3.67)   (2.20)
Options expired/forfeited (in dollars per share) (4.46)   (28.46)
Ending balance (in dollars per share) 5.20   $ 3.42
Options exercisable (in dollars per share) $ 3.50