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Note 9 - Production Costs - Components of Production Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Statement Line Items [Line Items]      
Salaries and wages* [1] $ 23,037 $ 20,609 $ 16,122
Consumable materials – Operations* [1] 23,601 17,375 14,938
Consumable materials – COVID-19 311 297 824
Electricity costs* [1] 9,634 10,407 8,312
Safety 998 774 708
Cash-settled share-based expense (note 12.1(a)) 853 692 634
On mine administration* [1] 2,736 1,806 1,304
Security costs 1,093 826 496
Obsolete inventory (note 20) 563 36 0
Pre-feasibility exploration costs 172 304 373
Cost of sales 62,998 53,126 43,711
Salaries and wages [1] (23,037) (20,609) (16,122)
Consumable materials – Operations [1] (23,601) (17,375) (14,938)
Cost of sales (62,998) (53,126) (43,711)
Gold work in progress [member]      
Statement Line Items [Line Items]      
Salaries and wages* 151 94 311
Consumable materials – Operations* 226 87 580
Electricity costs* (43) 44 241
On mine administration* (26) 18 34
Cost of sales 446 243 1,166
Salaries and wages (151) (94) (311)
Consumable materials – Operations (226) (87) (580)
Cost of sales $ (446) $ (243) $ (1,166)
[1] Gold work in progress included in the production cost amounts above were: 2022 2021 2020 Salaries and wages (151 ) 94 311 Consumable materials – Operations (226 ) 87 580 Electricity costs (43 ) 44 241 On mine administration (26 ) 18 34 (446 ) 243 1,166