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Note 23 - Other Reserves (Tables)
 12 Months Ended
Jun. 30, 2020
Statement Line Items [Line Items]  
Other reserves [Text Block]
   
As at June 30
    
As at March 31
  
(US dollars in thousands)
  
20
20
    
2019
    
2019
    
201
8
  
Equity instruments
    
27,057
      
26,087
      
26,090
      
25,072
  
Share option reserve
    
-
      
3,713
      
3,713
      
3,713
  
Capital raising costs
    
(6,009
)
    
(9,722
)
    
(9,722
)
    
(9,722
)
Treasury shares
    
-
      
(13
)
    
(246
)
    
(592
)
Equity incentive costs
    
344
      
-
      
-
      
-
  
Foreign exchange
    
16
      
11
      
11
      
(88
)
Total
  
 
21,408
      
20,076
      
19,846
      
18,383