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Note 14 - Derivative Financial Instruments - Derivative Financial Liabilities (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
Statement Line Items [Line Items]  
Increase in liability $ 135
Derivative liabilities 3,095
Gold loan agreement [member]  
Statement Line Items [Line Items]  
Increase in liability 114
Derivative liabilities 2,866
Call option [member]  
Statement Line Items [Line Items]  
Increase in liability 21
Derivative liabilities $ 229