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Note 12 - Exploration and Evaluation Assets - Exploration and Evaluation Assets (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2024
Dec. 31, 2023
Statement Line Items [Line Items]    
Balance at beginning of period $ 94,272 $ 17,579
- Bilboes Gold   73,198
Decommissioning asset estimation adjustment (899) [1] 1,618
- Consumables and drilling 1,285 1,005
- Contractor 19 2
- Labour 472 488
- Power 5 7
- Other 676 375
Balance 95,830 94,272
Bilboes Gold [member]    
Statement Line Items [Line Items]    
Balance at beginning of period 73,573 0
- Bilboes Gold   73,198
Decommissioning asset estimation adjustment 0 [1] 0
- Consumables and drilling 0 0
- Contractor 0 0
- Labour 0 0
- Power 0 0
- Other 609 375
Balance 74,182 73,573
Motapa [member]    
Statement Line Items [Line Items]    
Balance at beginning of period 10,592 7,844
Decommissioning asset estimation adjustment (899) [1] 1,466
- Consumables and drilling 1,266 903
- Contractor 14 2
- Labour 421 377
- Power 2 0
- Other 67 0
Balance 11,463 10,592
Maligreen [member]    
Statement Line Items [Line Items]    
Balance at beginning of period 5,998 5,626
Decommissioning asset estimation adjustment 0 [1] 152
- Consumables and drilling 19 102
- Contractor 5 0
- Labour 0 111
- Power 3 7
- Other 0 0
Balance 6,025 5,998
GG [member]    
Statement Line Items [Line Items]    
Balance at beginning of period 3,723 3,723
Decommissioning asset estimation adjustment 0 [1] 0
- Consumables and drilling 0 0
- Contractor 0 0
- Labour 51 0
- Power 0 0
- Other 0 0
Balance 3,774 3,723
Sabiwa [member]    
Statement Line Items [Line Items]    
Balance at beginning of period 294 294
Decommissioning asset estimation adjustment 0 [1] 0
- Consumables and drilling 0 0
- Contractor 0 0
- Labour 0 0
- Power 0 0
- Other 0 0
Balance 294 294
Abercorn [member]    
Statement Line Items [Line Items]    
Balance at beginning of period 27 27
Decommissioning asset estimation adjustment 0 [1] 0
- Consumables and drilling 0 0
- Contractor 0 0
- Labour 0 0
- Power 0 0
- Other 0 0
Balance 27 27
Valentine [member]    
Statement Line Items [Line Items]    
Balance at beginning of period 65 65
Decommissioning asset estimation adjustment 0 [1] 0
- Consumables and drilling 0 0
- Contractor 0 0
- Labour 0 0
- Power 0 0
- Other 0 0
Balance $ 65 $ 65
[1] After further review of the Motapa claims the old tailings storage facility, previously included in the rehabilitation liability, is not within the Caledonia claims area. The tailing storage facility was subsequently excluded from the rehabilitation liability footprint. Refer to note 20 for more information.