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Note 7 - Factoring (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

June 30,

  

December 31,

 
  

2021

  

2020

 
         

Accounts receivable - current

 $1,411,462  $561,834 
Loss on foreign currency  (50,000)  - 

Allowance for doubtful account

  (13,785

)

  (13,785

)

Accounts receivable, net of allowances for doubtful accounts

 $1,347,677  $548,049 
Factoring Fees [Table Text Block]
  

Three Months ended

June 30,

 
  

2021

  

2020

 
         

Factoring fees

 $18,900  $33,230 
  

Six Months ended

June 30,

 
  

2021

  

2020

 
         

Factoring fees

 $32,247  $65,230 
Factored Accounts Receivable [Member]  
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

June 30,

  

December 31,

 
  

2021

  

2020

 
         

Original invoice value

 $99,000  $241,715 

Factored amount

  (49,500

)

  (181,262

)

Due from factor

 $49,500  $60,453