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Note 17 - Exploration and Evaluation Assets (Details Textual)
$ in Thousands
 12 Months Ended
Nov. 03, 2021
USD ($)
ha
oz
t
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Nov. 09, 2022
USD ($)
Nov. 07, 2022
oz
t
GT
Nov. 01, 2022
USD ($)
oz
Statement Line Items [Line Items]              
Impairment loss recognised in profit or loss, exploration and evaluation assets   $ 0 $ 467 [1]        
Cash flows from (used in) exploration for and evaluation of mineral resources, classified as investing activities   (1,837) (2,596) $ (5,717)      
Maligreen [member]              
Statement Line Items [Line Items]              
Impairment loss recognised in profit or loss, exploration and evaluation assets [1]     $ (0)        
Historic gold mined, mass (Ounce) | oz 20,000            
Cash flows from (used in) exploration for and evaluation of mineral resources, classified as investing activities $ (4,000)            
Exploration and evaluation work, period (Year) 30 years            
Estimated meters of diamond core and percussion drilling 60,000            
Estimated bulk metallurgical test work (Metric Ton) | t 3.5            
Area of land (Hectare) | ha 550            
Indicated mineral resources (Metric Ton) | t           8,030,000.00  
Grade of indicated mineral resources (Gigaton) | GT           1.71  
Estimated gold in mineral resources (Ounce) | oz           442,000  
Inferred Mineral Resource (Metric Ton) | t           6,170,000  
Grade of inferred mineral resources (Gigaton) | GT           2.12  
Estimated gold in inferred mineral resource (Ounce) | oz           420,000  
Bilboes [member]              
Statement Line Items [Line Items]              
Non cash acquisitions, exploration and evaluation assets   73,198          
Non cash acquisitions, exploration and evaluation assets, decommissioned   1,618          
Non cash acquisitions, exploration and evaluation assets, right of use assets   $ 40          
Motapa [member]              
Statement Line Items [Line Items]              
Historic gold mined, mass (Ounce) | oz             300,000
Cash transferred         $ 41   $ 1,000
Financial liabilities recognised as of acquisition date             $ 0
[1] Caledonia completed sufficient work to establish that the potential orebody at the Connemara North property would not meet Caledonia’s requirements in terms of size, grade and width. Accordingly, Caledonia did not exercise the option to acquire the property. The costs have been impaired to $Nil.