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Note 4 - Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Receivables with Imputed Interest [Table Text Block]
  

December 31,

 
  

2022

  

2021

 
         

Trade accounts

 $4,798,827  $3,688,116 

Premiums

  1,143,918   901,769 

Allowance for doubtful accounts

  (111,379)  (121,022)
         

Total Accounts Receivable, net

 $5,831,366  $4,468,863