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Note 2 - Fair Value of Financial Instruments (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
           

September 30, 2023

   

December 31, 2022

 

Financial Assets:

 

Level

   

Carrying Value

   

Fair Value

   

Carrying Value

   

Fair Value

 
                                         

Cash and cash equivalents

    2     $ 7,026,443     $ 7,026,443     $ 7,148,207     $ 7,148,207  

Certificates of deposit

    2       1,508,042       1,508,042       1,004,603       999,919  

Total

          $ 8,534,485     $ 8,534,485     $ 8,152,810     $ 8,148,126