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Note 29 - Loans and Borrowings (Tables)
 12 Months Ended
Dec. 31, 2020
Statement Line Items [Line Items]  
Disclosure of detailed information about borrowings [text block]
      2020       2019       2018  
                         
Balance at January 1    
2,471
      
5,960
      
1,486
  
Cash flows                        
Repayment                        
- Capital    
(574
 )    
-
      
(1,500
 )
- Finance cost    
(388
 )    
(130
 )    
(58
 )
Proceeds    
-
      
2,340
      
6,000
  
Transaction cost    
-
      
(46
 )    
(60
 )
Unrealised foreign exchange    
(1,487
 )    
(5,818
 )    
-
  
                         
Non-cash flow                        
Finance cost    
386
      
165
      
92
  
Balance at December 31    
408
      
2,471
      
5,960
  
                         
Long-term portion of loan facility    
-
      
1,942
      
5,960
  
Short-term portion of loan facility    
408
      
529
      
-
  
Disclosure of terms and repayments of financing [text block]
                2020   2019
     
Currency
      
Nominal
interest rate
      
Year of
maturity
      
Face
value
      
Carrying
value
      
Face
value
      
Carrying
value
  
                                                         
Unsecured bank loan - Stanbic    
RTGS$
      
50
 %    
2021
      
87
      
87
      
384
      
384
  
Unsecured bank loan - First Capital    
RTGS$
      
55
 %    
2021
      
321
      
321
      
2,087
      
2,087
  
Total    
 
      
 
      
 
      
408
      
408
      
2,471
      
2,471