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Note 9 - Share-based Payments (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Statement Line Items [Line Items]          
Expense from equity-settled share-based payment transactions $ 279 $ 233 $ 785 $ 564  
Performance share units (PSUs) [member]          
Statement Line Items [Line Items]          
Liabilities from share-based payment transactions $ 1,664   1,664   $ 1,294
Expense from share-based payment transactions     479 298  
Value of other equity instruments exercised or vested in share-based payment arrangement, share capital     83 351  
Performance share units (PSUs) [member] | Production costs [Member]          
Statement Line Items [Line Items]          
Expense from share-based payment transactions     $ 665 $ 435  
Performance share units (PSUs) [member] | Bottom of range [member]          
Statement Line Items [Line Items]          
Performance probability     95.00% 93.00%  
Performance share units (PSUs) [member] | Top of range [member]          
Statement Line Items [Line Items]          
Performance probability     106.00% 100.00%  
Equity-settled performance units (EPUs) [member]          
Statement Line Items [Line Items]          
Expense from equity-settled share-based payment transactions     $ 384 $ 564  
Equity-settled performance units (EPUs) [member] | Production costs [Member]          
Statement Line Items [Line Items]          
Expense from equity-settled share-based payment transactions     $ 163 0  
Equity-settled performance units (EPUs) [member] | Bottom of range [member]          
Statement Line Items [Line Items]          
Performance probability     47.00%    
Equity-settled performance units (EPUs) [member] | Top of range [member]          
Statement Line Items [Line Items]          
Performance probability     105.00%    
Equity settlement restricted share units [member]          
Statement Line Items [Line Items]          
Expense from equity-settled share-based payment transactions     $ 401 $ 0  
Value from equity settled sharebased compensation tax portion recognised in equity     $ 220