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Note 6 - Software Development Assets (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Expense of Development Costs [Table Text Block]
   
2018
    
2017
  
Opening total software development costs
   $
5,768,476
     $
4,935,274
  
                 
Software development during the year
    
948,334
      
833,202
  
Closing total Software development costs
   $
6,716,810
     $
5,768,476