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Note 11 - Administrative Expenses - Components of Administrative Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Statement Line Items [Line Items]      
Investor relations $ 439 $ 353 $ 414
Audit fee 267 288 237
Advisory services fees 622 904 408
Listing fees 609 448 277
Directors fees – Company 527 323 240
Directors fees – Blanket 51 43 31
Employee costs 5,462 4,065 3,030
Other office administration cost 347 424 605
Management liability insurance 551 1,032 86
Travel costs 216 117 292
Eersteling Gold Mine administration costs 17
Administrative expenses $ 9,091 $ 7,997 $ 5,637