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Note 4 - Related Party Transactions (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2025
Mar. 31, 2024
Jun. 30, 2024
Preferred Stock, Value, Shares Redeemed During Period $ (749,995) $ (749,985) $ (749,995) $ (749,995) $ (749,995)      
Related Party [Member]                
Accounts Payable $ 0         $ 0   $ 0
Preferred Stock, Value, Shares Redeemed During Period           $ 769,213 $ 727,353