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Note 3 - Accrued Expenses (Tables)
3 Months Ended
Mar. 31, 2017
Notes Tables  
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
    March 31, 2017   December 31, 2016
         
Accrued commissions   $
192,553
    $
221,837
 
Reserve for merchant losses    
172,832
     
172,832
 
Other accrued expenses    
326,124
     
192,769
 
Accrued taxes    
39,722
     
38,469
 
Accrued salaries    
76,590
     
77,415
 
Total accrued expenses   $
807,821
    $
703,322