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Note 2 - Significant Accounting Policies - Schedule of Earnings Per Share (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Net income applicable to common shareholders $ 1,880,063 $ 1,416,082 $ 4,892,800 $ 3,952,557
Weighted average shares, basic (in shares) 18,254,000 18,194,000 18,249,000 18,194,000
Warrants to purchase Common Stock (in shares) 889,000 760,000 873,000 680,000
Weighted average shares, diluted (in shares) 19,143,000 18,954,000 19,122,000 18,874,000
Basic (in dollars per share) $ 0.1 $ 0.08 $ 0.27 $ 0.22
Diluted (in dollars per share) $ 0.1 $ 0.08 $ 0.26 $ 0.21