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Note 4 - Change in Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2019
Statement Line Items [Line Items]  
Disclosure of initial application of standards or interpretations [text block]
The impact of initial date of transition is summarised below:     $’000  
     
Right of use assets (cost) – Property, plant and equipment (note 18)    
410
  
Right of use assets (accumulated depreciation) – Property, plant and equipment (note 18)    
(146
 )
Lease liabilities – Trade and other payables    
264