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Note 4 - Accounts Receivable (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Receivables with Imputed Interest [Table Text Block]
  

June 30,

  

December 31,

 
  

2022

  

2021

 
         

Trade accounts

 $5,392,108  $3,688,116 

Premiums

  1,210,882   901,769 

Allowance for doubtful accounts

  (117,162)  (121,022)
         

Total Accounts Receivable, net

 $6,485,828  $4,468,863