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Note 6 - Net Income (Loss) Per Share - Reconciliation of the Components of Basic and Diluted Net Loss Per Share (Details) - USD ($)
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Net income/(loss) attributable to common stock $ (23,506,650) $ 23,869,123
Weighted average shares for basic EPS (in shares) 6,734,444 6,250,894
Effect of dilutive securities (in shares) 0 2,767
Weighted average shares for diluted EPS (in shares) 6,734,444 6,253,661
Basic (in dollars per share) $ (3.49) $ 3.82
Diluted (in dollars per share) $ (3.49) $ 3.82