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Note 29 - Provisions - Reconciliation of Site Restoration Provision (Details) - Provision for decommissioning, restoration and rehabilitation costs [member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Statement Line Items [Line Items]    
Balance January 1 $ 3,567 $ 3,346
Unwinding of discount 0 2
Change in estimate - adjustment capitalised in Property, plant and equipment (408) 219
Acquisition - Maligreen 135 0
Balance December 31 $ 3,294 $ 3,567