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Note 17 - Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2020
Statement Line Items [Line Items]  
Disclosure of detailed information about property, plant and equipment [text block]
Cost   Land and
Buildings		     Mine
development,
infrastructure
and other		     Plant and
equipment		     Furniture
and fittings		     Motor
vehicles		     Solar Plant     Total  
                                           
Balance at January 1, 2019    
10,339
      
74,509
      
32,675
      
923
      
2,402
      
–
      
120,848
  
Initial recognition of right of use assets    
409
      
–
      
–
      
–
      
–
      
–
      
409
  
Additions*    
267
      
19,020
      
897
      
88
      
151
      
–
      
20,423
  
Impairments    
–
      
–
      
(144
 )    
–
      
–
      
–
      
(144
 )
Disposals    
(212
 )    
–
      
–
      
–
      
(16
 )    
–
      
(228
 )
Reallocations between asset classes    
25
      
(2,989
 )    
2,964
      
–
      
–
      
–
      
–
  
Foreign exchange movement    
5
      
2
      
3
      
7
      
1
      
–
      
18
  
Balance at December 31, 2019    
10,833
      
90,542
      
36,395
      
1,018
      
2,538
      
–
      
141,326
  
                                                         
Balance at January 1, 2020    
10,833
      
90,542
      
36,395
      
1,018
      
2,538
      
–
      
141,326
  
Additions*    
1
      
19,507
      
4,221
      
219
      
458
      
372
      
24,778
  
Derecognised plant and equipment    
–
      
–
      
(238
 )    
–
      
–
      
–
      
(238
 )
Reallocations between asset classes    
930
      
(1,210
 )    
280
      
–
      
–
      
–
      
–
  
Foreign exchange movement    
(7
 )    
–
      
(14
 )    
(2
 )    
(1
 )    
20
      
(4
 )
Balance at December 31, 2020    
11,757
      
108,839
      
40,644
      
1,235
      
2,995
      
392
      
165,862
  
Accumulated depreciation and Impairment losses   Land and
Buildings		     Mine
development,
infrastructure
and other		     Plant and
equipment		     Furniture
and fittings		     Motor
vehicles		     Solar Plant     Total  
                                           
Balance at January 1, 2019    
4,411
      
5,821
      
17,357
      
649
      
2,150
      
–
      
30,388
  
Initial recognition of right of use assets    
146
      
–
      
–
      
–
      
–
      
–
      
146
  
Depreciation for the year    
1,005
      
504
      
2,693
      
99
      
133
      
–
      
4,434
  
Disposals    
(149
 )    
–
      
–
      
–
      
(16
 )    
–
      
(165
 )
Foreign exchange movement    
–
      
–
      
–
      
5
      
6
      
–
      
11
  
Balance at December 31, 2019    
5,413
      
6,325
      
20,050
      
753
      
2,273
      
–
      
34,814
  
                                                         
Balance at January 1, 2020    
5,413
      
6,325
      
20,050
      
753
      
2,273
      
–
      
34,814
  
Depreciation for the year    
1,030
      
648
      
2,691
      
102
      
157
      
–
      
4,628
  
Accumulated depreciation for derecognised plant and equipment    
–
      
–
      
(56
 )    
–
      
–
      
–
      
(56
 )
Foreign exchange movement    
3
      
–
      
–
      
(6
 )    
–
      
–
      
(3
 )
Balance at December 31, 2020    
6,446
      
6,973
      
22,685
      
849
      
2,430
      
–
      
39,383
  
                                                         
Carrying amounts                                                        
At January 1, 2019    
5,928
      
68,688
      
15,318
      
274
      
252
      
–
      
90,460
  
At December 31, 2019    
5,420
      
84,217
      
16,345
      
265
      
265
      
–
      
106,512
  
At December 31, 2020    
5,311
      
101,866
      
17,959
      
386
      
565
      
392
      
126,479