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Note 9 - Administrative Expenses - Components of Administrative Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Statement Line Items [Line Items]        
Investor relations     $ 174 $ 255
Audit fee     124 118
Advisory services fee     272 195
Listing fees     190 170
Directors fees company     140 112
Directors fees Blanket     20 8
Employee costs     1,588 1,383
Other office administration costs     229 309
Travel costs     85 138
Eersteling Gold Mine administration costs     17
Administrative expenses $ 1,275 $ 1,309 $ 2,822 $ 2,705