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Note 5 - Other Operating Income and Expenses
 12 Months Ended
Dec. 31, 2018
Statement Line Items [Line Items]  
Disclosure of other operating income (expense) [text block]
5
Other operating income and expenses
 
    Year ended December 31,  
(all amounts in thousands of U.S. dollars)   2018     2017     2016  
             
Other operating income                        
Net income from other sales    
3,604
      
4,395
      
16,275
  
Net rents    
4,909
      
4,325
      
4,852
  
Other    
6,546
      
1,796
      
-
  
     
15,059
      
10,516
      
21,127
  
                         
Other operating expenses                        
Contributions to welfare projects and non-profits organizations    
11,379
      
9,158
      
9,534
  
Loss on fixed assets and material supplies disposed / scrapped    
-
      
118
      
57
  
Allowance for doubtful receivables    
1,179
      
84
      
432
  
Other    
-
      
-
      
1,388
  
     
12,558
      
9,360
      
11,411
  
From discontinued operations    
-
      
(1
 )    
(248
 )
     
12,558
      
9,359
      
11,163