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Note 26 - Provisions (Tables)
 12 Months Ended
Dec. 31, 2019
Statement Line Items [Line Items]  
Disclosure of other provisions [text block]
             
Reconciliation of site restoration provision   2019     2018  
Balance at January 1    
3,309
      
3,797
  
Reclassified to Liabilities associated with assets held for sale    
-
      
(602
 )
Foreign exchange movement    
-
      
(97
 )
Unwinding of discount    
20
      
20
  
Rehabilitation performed    
-
      
(54
 )
Change in estimate during the year                
-
adjusted through profit or loss
    
-
      
84
  
-
adjustment capitalised in Property, plant and equipment		    
17
      
161
  
Balance at December 31    
3,346
      
3,309