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Note 2 - Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
      

June 30, 2021

  

December 31, 2020

 

Financial Assets:

 

Level

  

Carrying Value

  

Fair Value

  

Carrying Value

  

Fair Value

 
                     

Cash and cash equivalents

  1  $7,130,236  $7,130,236  $6,463,255  $6,463,255 

Equity investment in mutual funds

  1   504,530   502,757   504,369   502,595 

Total

     $7,634,766  $7,632,993  $6,967,624  $6,965,850