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Note 25 - Share Capital (Details Textual) - USD ($)
$ / shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement Line Items [Line Items]        
Proceeds from issuing shares   $ 15,569 $ 0 $ 7,806
M Learmonth [member]        
Statement Line Items [Line Items]        
Increase (decrease) in number of ordinary shares issued (in shares) 3,587      
V Gapare [member]        
Statement Line Items [Line Items]        
Increase (decrease) in number of ordinary shares issued (in shares) 11,000      
Issued capital [member]        
Statement Line Items [Line Items]        
Proceeds from issuing shares   $ 15,569    
Increase (decrease) in number of ordinary shares issued (in shares) [1]   1,207,514    
Ordinary shares [member]        
Statement Line Items [Line Items]        
Par value per share (in dollars per share)   $ 0    
Preference shares [member]        
Statement Line Items [Line Items]        
Par value per share (in dollars per share)   $ 0    
Depository receipts on AIM [member] | Issued capital [member]        
Statement Line Items [Line Items]        
Proceeds from issuing shares   $ 10,770    
Share issue related cost   846    
Depository receipts on VFEX [member] | Issued capital [member]        
Statement Line Items [Line Items]        
Proceeds from issuing shares   5,850    
Share issue related cost   $ 205    
[1] Gross proceeds of $10,770 with a transaction cost of $846 were raised by issuing depository interests on the AIM of the London Stock Exchange Gross proceeds of $5,850 with a transaction cost of $205 were raised by issuing depository receipts on the VFEX. During quarter one of 2023, Mark Learmonth, Chief Executive Officer, and Toziyana Resources Limited, a company affiliated with Victor Gapare, executive Director of the Company, subscribed for 3,587 and 11,000 depositary interests respectively in the equity raise.