v3.26.3
Plant, Equipment and Mining Properties (Details) - USD ($)
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Statement [Line Items]    
Beginning Balance $ 155,406,000 $ 81,719,000
Additions/ Transfers 20,029,000 18,931,000
Transfer from exploration and evaluation assets   35,005,000
Royalty buyback   21,787,000
Writendowns (177,000) (2,078,000)
Effect of movements in exchange rates (692,000) 42,000
Ending balance 174,566,000 155,406,000
Accumulated Depletion And Depreciation, Beginning Balance 30,041,000 27,918,000
Accumulated Depletion And Depreciation, Additions / Transfers 6,543,000 3,687,000
Accumulated Depletion And Depreciation, Writedowns (128,000) (1,564,000)
Accumulated Depletion And Depreciation, Ending Balance 36,456,000 30,041,000
Net book value 138,110,000 125,365,000
Office Equipment Furniture And Fixtures [Member]    
Statement [Line Items]    
Beginning Balance 1,234,000 1,191,000
Additions/ Transfers 79,000 55,000
Transfer from exploration and evaluation assets   0
Royalty buyback   0
Writendowns (2,000) (12,000)
Effect of movements in exchange rates 0 0
Ending balance 1,311,000 1,234,000
Accumulated Depletion And Depreciation, Additions / Transfers 116,000 148,000
Accumulated Depletion And Depreciation, Writedowns (2,000) (11,000)
Accumulated Depletion And Depreciation, Ending Balance 894,000 780,000
Net book value 417,000 454,000
Accumulated Depletion And Depreciation, Beginning Balance 780,000 643,000
Computer Equipment [Member]    
Statement [Line Items]    
Beginning Balance 1,956,000 1,763,000
Additions/ Transfers 93,000 200,000
Transfer from exploration and evaluation assets   0
Royalty buyback   0
Writendowns (7,000) (7,000)
Effect of movements in exchange rates 0 0
Ending balance 2,042,000 1,956,000
Accumulated Depletion And Depreciation, Additions / Transfers 298,000 410,000
Accumulated Depletion And Depreciation, Writedowns (6,000) (5,000)
Accumulated Depletion And Depreciation, Ending Balance 1,697,000 1,405,000
Net book value 345,000 551,000
Accumulated Depletion And Depreciation, Beginning Balance 1,405,000 1,000,000
Mine Machinery And Transportation Equipment [Member]    
Statement [Line Items]    
Beginning Balance 23,591,000 16,331,000
Additions/ Transfers 6,824,000 8,973,000
Transfer from exploration and evaluation assets   0
Royalty buyback   0
Writendowns (96,000) (1,716,000)
Effect of movements in exchange rates 47,000 3,000
Ending balance 30,366,000 23,591,000
Accumulated Depletion And Depreciation, Additions / Transfers 781,000 1,523,000
Accumulated Depletion And Depreciation, Writedowns (89,000) (1,455,000)
Accumulated Depletion And Depreciation, Ending Balance 6,057,000 5,365,000
Net book value 24,309,000 18,226,000
Accumulated Depletion And Depreciation, Beginning Balance 5,365,000 5,297,000
Mill Machinery And Processing Equipment [Member]    
Statement [Line Items]    
Beginning Balance 32,304,000 28,222,000
Additions/ Transfers 4,173,000 4,425,000
Transfer from exploration and evaluation assets   0
Royalty buyback   0
Writendowns (72,000) (343,000)
Effect of movements in exchange rates 0 0
Ending balance 36,405,000 32,304,000
Accumulated Depletion And Depreciation, Additions / Transfers 4,410,000 774,000
Accumulated Depletion And Depreciation, Writedowns (31,000) (93,000)
Accumulated Depletion And Depreciation, Ending Balance 12,909,000 8,530,000
Net book value 23,496,000 23,774,000
Accumulated Depletion And Depreciation, Beginning Balance 8,530,000 7,849,000
Buildings and construction in process [Member]    
Statement [Line Items]    
Beginning Balance 15,851,000 14,982,000
Additions/ Transfers 2,078,000 842,000
Transfer from exploration and evaluation assets   0
Royalty buyback   0
Writendowns 0 0
Effect of movements in exchange rates (6,000) 27,000
Ending balance 17,923,000 15,851,000
Accumulated Depletion And Depreciation, Additions / Transfers 320,000 329,000
Accumulated Depletion And Depreciation, Writedowns 0 0
Accumulated Depletion And Depreciation, Ending Balance 3,879,000 3,559,000
Net book value 14,044,000 12,292,000
Accumulated Depletion And Depreciation, Beginning Balance 3,559,000 3,230,000
Mining Property [Member]    
Statement [Line Items]    
Beginning Balance 80,470,000 19,230,000
Additions/ Transfers 6,782,000 4,436,000
Transfer from exploration and evaluation assets   35,005,000
Royalty buyback   21,787,000
Writendowns 0 0
Effect of movements in exchange rates (733,000) 12,000
Ending balance 86,519,000 80,470,000
Accumulated Depletion And Depreciation, Additions / Transfers 618,000 503,000
Accumulated Depletion And Depreciation, Writedowns 0 0
Accumulated Depletion And Depreciation, Ending Balance 11,020.000 10,402,000
Net book value 75,499,000 70,068,000
Accumulated Depletion And Depreciation, Beginning Balance $ 10,402,000 $ 9,899,000