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Note 21 - Disposal Group Held For Sale (Tables)
 12 Months Ended
Dec. 31, 2018
Statement Line Items [Line Items]  
Disclosure of assets and liabilities classified as held for sale [text block]
    2018     2017  
Non-current assets                
Property, plant, and equipment    
214
      
—  
  
                 
Current assets                
Trade and other receivables    
80
      
—  
  
Cash and cash equivalents    
2
      
—  
  
Assets held for sale    
296
      
—  
  
                 
Non-current liabilities                
Rehabilitation provision    
602
      
—  
  
                 
Current liabilities                
Trade and other payables    
7
      
—  
  
Liabilities associated with assets held for sale    
609
      
—