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CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares
Dec. 31, 2021
Jun. 30, 2021
CONSOLIDATED BALANCE SHEETS (UNAUDITED)    
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 42,053,623 40,913,148
Common stock, shares outstanding 40,500,320 39,576,606
Treasury stock, shares 1,553,303 1,336,542