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Note 26 - Provisions
 12 Months Ended
Dec. 31, 2019
Statement Line Items [Line Items]  
Disclosure of provisions [text block]
26
Provisions
 
Site restoration
Site restoration relates to the estimated cost of closing down the mines and represents the site and environmental restoration costs, estimated to be paid throughout the period up until closure due to areas of environmental disturbance present at the reporting date as a result of mining activities. In the case of Blanket Mine the costs of site restoration are discounted based on the estimated life of mine. Site restoration costs at Blanket Mine are capitalised to mineral properties depreciated at initial recognition and amortised systematically over the estimated life of the mine for costs relating to the decommissioning of property, plant and equipment.
             
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
  
 
The discount rates currently applied in the calculation of the net present value of the Blanket Mine provision is
2.31%
(
2018:
2.95%
), based on a risk-free rate and cash flows estimated at an average
2.27%
inflation (
2018:
2.13%
). The gross rehabilitation costs before discounting amounted to
$3,603
(
2018:
$3,604
) for Blanket Mine as at
December 31, 2019.