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Note 2 - Fair Value of Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2025
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
           

December 31, 2025

    

December 31, 2024

  

Financial Assets:

  

Level

    

Carrying Value

    

Fair Value

    

Carrying Value

    

Fair Value

  
                                         

Cash and cash equivalents

     2     $ 18,010,108     $ 18,010,108     $ 3,421,576     $ 3,421,576  

Certificates of deposit

     2       -       -       5,908,491       5,829,337  

Total

           $ 18,010,108     $ 18,010,108     $ 9,330,067     $ 9,250,913