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Note 2 - Fair Value of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
           

December 31, 2021

   

December 31, 2020

 

Financial Assets:

 

Level

   

Carrying Value

   

Fair Value

   

Carrying Value

   

Fair Value

 
                                         

Cash and cash equivalents

    1     $ 7,409,873     $ 7,409,873     $ 6,463,255     $ 6,463,255  

Equity investment in mutual funds

    1       504,606       502,832       504,369       502,595  

Total

          $ 7,914,479     $ 7,912,705     $ 6,967,624     $ 6,965,850