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Note 22 - Non-current Allowances and Provisions (Tables)
 12 Months Ended
Dec. 31, 2017
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,  
    2017     2016  
       
Values at the beginning of the year    
(913
 )    
(1,112
 )
Translation differences    
106
      
199
  
Used    
166
      
-
  
Values at the end of the year    
(641
 )    
(913
 )
Disclosure of detailed information about non-current allowances and provisions from liabilities [text block]
    Year ended December 31,  
    2017     2016  
Values at the beginning of the year    
63,257
      
61,421
  
Translation differences    
366
      
3,296
  
Additional provisions    
3,994
      
6,794
  
Reclassifications    
(7,591
 )    
(1,932
 )
Used    
(23,588
 )    
(6,322
 )
Values at the end of the year    
36,438
      
63,257