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Note 13 - Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2025
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
   

March 31, 2025

   

December 31, 2024

 

Current assets:

               

Marketable equity securities

               

Number of shares owned

    2,421,180       2,421,180  

Quoted market price

  $ 0.03491     $ 0.06256  

Share Value

  $ 84,526     $ 151,475  

Estimated cost to sell shares

  $ (20,000 )   $ (20,000 )
                 

Fair value of marketable equity securities

  $ 64,526     $ 131,475