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Note 19 - Trade and Other Receivables (Tables)
 12 Months Ended
Dec. 31, 2018
Statement Line Items [Line Items]  
Disclosure of the components and trade and other receivables [text block]
    2018     2017  
             
Bullion revenue receivable    
2,695
      
1,386
  
VAT receivables    
2,743
      
2,947
  
Deposits for stores and equipment and other receivables    
954
      
629
  
     
6,392
      
4,962