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Note 24 - Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2018
Statement Line Items [Line Items]  
Earnings per share [text block]
(In number of shares)   Note     2018     2017     2016  
                         
Issued shares at beginning of year  
23
      
10,603,153
      
52,787,428
      
52,078,908
  
Share consolidation  
 
      
—  
      
(42,135,492
 )    
(41,663,126
 )
Issued shares post consolidation  
 
      
10,603,153
      
10,651,936
      
10,415,782
  
Weighted average shares repurchased  
 
      
—  
      
(60,978
 )    
—  
  
Weighted average shares issued  
 
      
—  
      
16,924
      
41,460
  
Weighted average number of shares at December 31  
 
      
10,603,153
      
10,607,882
      
10,457,242
  
(In number of shares)
 
2018
 
 
2017
 
 
2016
 
                   
Weighted average shares at December 31    
10,603,153
      
10,607,882
      
10,457,242
  
Effect of dilutive options    
698
      
9,622
      
23,449
  
Weighted average number of shares (diluted) at December 31    
10,603,851
      
10,617,504
      
10,480,691
  
    2018     2017     2016  
Profit/(loss) for the year attributable to owners of the Company (basic and diluted)    
10,766
      
9,384
      
8,526
  
Blanket Mine Employee Trust Adjustment    
(280
 )    
(210
 )    
(238
 )
Profit attributable to ordinary shareholders (basic and diluted)    
10,486
      
9,174
      
8,288
  
Basic earnings per share - $    
0.99
      
0.86
      
0.79
  
Diluted earnings per share - $    
0.99
      
0.86
      
0.79