v3.25.2
Note 5 - Stockholders' Equity and Dilutive Equity Instruments - Dilutive Equity Instruments (Details) (Parentheticals) - $ / shares
Jun. 30, 2025
Jun. 30, 2024
New Creditor Warrants [Member]    
Strike price per common share (in dollars per share) $ 0.001 $ 0.001
GulfMark Creditor Warrants [Member]    
Strike price per common share (in dollars per share) $ 0.01 $ 0.01