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Note 3 - Selling, General and Administrative Expenses
 12 Months Ended
Dec. 31, 2017
Statement Line Items [Line Items]  
Disclosure of general and administrative expense [text block]
3
Selling, general and administrative expenses
 
    Year ended December 31,  
(all amounts in thousands of U.S. dollars)   2017     2016     2015  
                   
Services and fees    
132,301
      
123,653
      
158,541
  
Labor cost    
443,338
      
441,355
      
579,360
  
Depreciation of property, plant and equipment    
17,979
      
16,965
      
18,543
  
Amortization of intangible assets    
188,550
      
241,238
      
238,539
  
Commissions, freight and other selling expenses    
339,759
      
243,401
      
351,657
  
Provisions for contingencies    
17,664
      
30,841
      
19,672
  
Allowances for doubtful accounts    
(5,421
 )    
(12,573
 )    
36,788
  
Taxes    
56,826
      
67,724
      
129,018
  
Other    
81,061
      
76,563
      
92,157
  
     
1,272,057
      
1,229,167
      
1,624,275
  
From discontinued operations    
(2,041
 )    
(32,238
 )    
(30,678
 )
     
1,270,016
      
1,196,929
      
1,593,597