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Note 7 - Property and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2018
Notes Tables  
Property, Plant and Equipment [Table Text Block]
    December 31,
    2018   2017
Equipment    
8,677
     
7,588
 
Furniture, fixture, and fittings and other    
4,064
     
3,766
 
Total gross value    
12,742
     
11,354
 
Less: accumulated depreciation and amortization    
(8,534
)    
(7,672
)
Total    
4,208
     
3,682