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Note 7 - Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
December 31,
  
   
201
9
    
2018
  
Cost:
                
Computers and equipment
   $
20,435
     $
22,139
  
Office furniture and equipment
    
1,380
      
1,471
  
Leasehold improvements
    
4,953
      
5,221
  
                 
     
26,768
      
28,831
  
Less - accumulated depreciation
    
19,963
      
26,083
  
                 
Depreciated cost
   $
6,805
     $
2,748