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Note 21 - Non-current Allowances and Provisions (Tables)
 12 Months Ended
Dec. 31, 2018
Statement Line Items [Line Items]  
Disclosure of detailed information about non-current allowances and provisions deducted from non-current receivables [text block]
    Year ended December 31,
    2018   2017
     
Values at the beginning of the year    
(641
 )    
(913
 )
Translation differences    
110
      
106
  
Used    
531
      
166
  
Values at the end of the year    
-
      
(641
 )
Disclosure of detailed information about non-current allowances and provisions from liabilities [text block]
    Year ended December 31,
    2018   2017
Values at the beginning of the year    
36,438
      
63,257
  
Translation differences    
(5,261
 )    
366
  
Additional provisions    
14,397
      
3,994
  
Reclassifications    
(2,406
 )    
(7,591
 )
Used    
(7,079
 )    
(23,588
 )
Values at the end of the year    
36,089
      
36,438