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SHAREHOLDERS' EQUITY AND STOCK-BASED COMPENSATION, Stock Option Activity (Details) - Stock Options [Member] - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Stock Option Activity [Roll Forward]    
Outstanding, beginning balance (in shares) 2,809,095 2,523,638
Granted (in shares) 438,533 605,387
Exercised (in shares) (947,435) 0
Forfeited (in shares) (7,000) (125,005)
Expired (in shares) (57,907) (194,925)
Outstanding, ending balance (in shares) 2,235,286 2,809,095
Weighted Average Exercise Price [Roll Forward]    
Outstanding, beginning balance (in dollars per share) $ 1.19 $ 1.39
Granted (in dollars per share) 1.05 0.95
Exercised (in dollars per share) 0.95  
Forfeited (in dollars per share) 1.23 1.02
Expired (in dollars per share) 1.95 1.18
Outstanding, ending balance (in dollars per share) 1.24 1.19
Fair Value of Stock Options [Abstract]    
Fair value of stock options (in dollars per share) $ 0.54 $ 0.50
Fair value of stock options vested $ 650 $ 282