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Note 7 - Factoring (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

March 31,

  

December 31,

 
  

2022

  

2021

 

Accounts receivable

 $2,817,116  $1,234,411 

Loss on foreign currency

  (50,000

)

  (50,000

)

Allowance for doubtful accounts

  (213,785

)

  (213,785

)

Accounts receivable, net of allowances for doubtful accounts

 $2,553,331  $970,626 
Factoring Fees [Table Text Block]
  

Three Months ended

March 31,

 
  

2022

  

2021

 
         

Factoring fees

 $18,727  $13,347 
Factored Accounts Receivable [Member]  
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

March 31,

  

December 31,

 
  

2022

  

2021

 
         

Original invoice value

 $108,400  $99,000 

Factored amount

  (56,550

)

  (49,500)

Balance due from factor

 $51,850  $49,500