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Note 10 - Other Expenses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Statement Line Items [Line Items]      
Intermediated Money Transaction Tax $ 799 $ 451 $ 354
Solar evaluation cost * [1] 0 230 160
COVID-19 donations 74 1,322 0
Community and social responsibility cost 1,167 382 0
Other 0 0 8
Impairment of property, plant and equipment - plant and equipment (note 18) 498 0 144
Impairment of exploration and evaluation assets (note 19) 3,837 2,930 0
Expected credit losses on deferred consideration on the disposal of subsidiary (notes 23.2 and 24) 761 0 0
Other expenses $ 7,136 $ 5,315 $ 666
[1] Capitalised from July 6, 2020, refer to note 18.