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Note 17 - Trade and Other Receivables (Tables)
 12 Months Ended
Dec. 31, 2017
Statement Line Items [Line Items]  
Disclosure of the components and trade and other receivables [text block]
    2017     2016  
             
Bullion revenue receivable    
1,386
      
1,059
  
VAT receivables    
2,947
      
1,901
  
Deposits for stores and equipment and other receivables    
629
      
465
  
Total    
4,962
      
3,425