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Note 22 - Trade and Other Receivables (Tables)
 12 Months Ended
Dec. 31, 2020
Statement Line Items [Line Items]  
Disclosure of the components and trade and other receivables [text block]
    2020     2019     January 1, 2019  
                   
Bullion sales receivable    
1,311
      
2,987
      
2,695
  
VAT receivables    
2,278
      
1,765
      
2,743
  
Deferred consideration on the disposal of subsidiary    
1,100
      
1,991
      
–
  
Deposits for stores and equipment and other receivables    
273
      
169
      
954
  
     
4,962
      
6,912
      
6,392