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Note 4 - Accounts Receivable (Tables)
3 Months Ended
Mar. 31, 2025
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
   

March 31,

   

December 31,

 
   

2025

   

2024

 

Trade accounts receivable

  $ 4,101,003     $ 3,033,612  

Allowance for current expected credit losses

    (660,980 )     (637,556 )

Total accounts receivable, net

  $ 3,440,023     $ 2,396,056  
Financing Receivable, Allowance for Credit Loss [Table Text Block]
   

March 31,

   

December 31,

 
   

2025

   

2024

 

Allowance for current expected credit losses at the beginning of the period

  $ 637,556     $ 134,912  

Bad debt expense

    12,007       578,423  

Receivables written off during the periods

    (11,123 )     (49,577 )

Effect of exchange rate changes

    22,540       (26,202 )

Allowance for current expected credit losses at the end of the period

  $ 660,980     $ 637,556