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Note 4 - Related Party Transactions (Details Textual) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Sep. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Mar. 31, 2026
Jun. 30, 2025
Jun. 30, 2024
Preferred Stock, Value, Shares Redeemed During Period $ (375,003) $ (749,995) $ (749,995) $ (749,995) $ (749,985) $ (749,995)      
Series B Preferred Stock [Member]                  
Preferred Stock, Value, Shares Redeemed During Period             $ 1,752,330 $ 2,937,749 $ 95,284
Series B-1 Preferred Stock [Member]                  
Preferred Stock, Value, Shares Redeemed During Period                 $ 2,272,701
Related Party [Member]                  
Preferred Stock, Value, Shares Redeemed During Period 834,773     $ 769,212          
Accounts Payable $ 0           $ 0 $ 0