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Note 29 - Cash Flow Information
 12 Months Ended
Dec. 31, 2018
Statement Line Items [Line Items]  
Disclosure of cash flow statement [text block]
29
        Cash flow information
 
Non-cash items and information presented separately on the cash flow statement:
 
    2018     2017     2016  
                   
Operating profit    
21,421
      
20,618
      
18,978
  
Adjustments for:                        
Loss on sale of Property, plant and equipment    
—  
      
2
      
44
  
Impairment of Property, plant and equipment    
208
      
12
      
20
  
Foreign exchange (gains)/losses    
(243
 )    
121
      
(105
 )
Cash-settled share-based payment expense    
228
      
897
      
788
  
Cash-settled share-based payment expense included in operating cost    
43
      
311
      
—  
  
Equity-settled share-based payment expense    
14
      
835
      
—  
  
Site restoration    
30
      
36
      
32
  
Depreciation    
4,071
      
3,763
      
3,491
  
Allowance for obsolete stock    
15
      
32
      
862
  
Provision for impairment – royalty rebate (note 11)    
—  
      
181
      
—  
  
Net cash used for assets and liabilities held for sale    
(2
 )    
—  
      
—  
  
Cash generated by operations before working capital changes    
25,785
      
26,808
      
24,110
  
Inventories    
(277
 )    
(1,975
 )    
(1,990
 )
Prepayments    
(62
 )    
82
      
(99
 )
Trade and other receivables    
(1,916
 )    
(1,437
 )    
555
  
Trade and other payables    
(2,411
 )    
5,407
      
3,095
  
Cash flows from operating activities    
21,119
      
28,885
      
25,671