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Note 32 - Financial Instruments and Risk Management - Effect of Gold Prices on Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Put option derivative [member]    
Statement Line Items [Line Items]    
Increase by 5% of the gold price $ 0 $ 0
Decrease by 5% of the gold price 22 0
Increase by 5% of the gold price 0 0
Decrease by 5% of the gold price 22 0
Gold loan derivative [member]    
Statement Line Items [Line Items]    
Increase by 5% of the gold price 0 143
Decrease by 5% of the gold price 0 (143)
Increase by 5% of the gold price 0 143
Decrease by 5% of the gold price 0 (143)
Call option derivative [member]    
Statement Line Items [Line Items]    
Increase by 5% of the gold price 0 11
Decrease by 5% of the gold price 0 (11)
Increase by 5% of the gold price 0 11
Decrease by 5% of the gold price $ 0 $ (11)