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Note 14 - Finance Income and Finance Costs (Tables)
 12 Months Ended
Dec. 31, 2018
Statement Line Items [Line Items]  
Disclosure of the components of finance income (cost) [text block]
Finance income   2018     2017     2016  
                   
Interest received – Bank    
53
      
38
      
16
  
                         
Finance cost                        
                         
Interest – Term loan    
92
      
155
      
103
  
Interest – Capitalised to Property, plant and equipment (note 17)    
(92
 )    
(155
 )    
(103
 )
Unwinding of rehabilitation provision    
20
      
25
      
25
  
Finance charges – Overdraft    
253
      
44
      
167
  
     
273
      
69
      
192