v3.26.3
Property and equipment and right-of-use assets - Carrying Amounts (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance $ 6,441,304    
Lease reassessments 548,615    
Ending balance 5,407,297   $ 6,441,304
Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 4,316,306    
Ending balance 3,490,276   4,316,306
Right-of-use assets      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 2,124,998    
Ending balance 1,917,021   2,124,998
Buildings | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 1,374,581    
Ending balance 1,308,505   1,374,581
Transportation equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 22,962    
Ending balance 10,691   22,962
Office and computer equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 542,870    
Ending balance 420,859   542,870
Laboratory and testing equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 2,375,893    
Ending balance 1,750,221   2,375,893
Cost      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 11,251,318 $ 9,710,911 9,710,911
Additions 4,142   1,832,879
Disposals     (759,479)
Lease reassessments 548,615    
Foreign exchange impact 237,177   467,007
Ending balance 12,041,252   11,251,318
Cost | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 7,731,915 7,351,549 7,351,549
Additions 4,142   37,186
Disposals     (22,437)
Lease reassessments 0    
Foreign exchange impact 207,362   365,617
Ending balance 7,943,419   7,731,915
Cost | Right-of-use assets      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 3,519,403 2,359,362 2,359,362
Additions 0   1,795,693
Disposals     (737,042)
Lease reassessments 548,615    
Foreign exchange impact 29,815   101,390
Ending balance 4,097,833   3,519,403
Cost | Buildings      
Reconciliation of changes in property, plant and equipment [abstract]      
Foreign exchange impact 0    
Cost | Buildings | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 1,880,133 1,880,133 1,880,133
Additions 0   0
Disposals     0
Lease reassessments 0    
Foreign exchange impact     0
Ending balance 1,880,133   1,880,133
Cost | Transportation equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Foreign exchange impact 0    
Cost | Transportation equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 197,524 197,524 197,524
Additions 0   0
Disposals     0
Lease reassessments 0    
Foreign exchange impact     0
Ending balance 197,524   197,524
Cost | Office and computer equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Foreign exchange impact 25,278    
Cost | Office and computer equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 1,028,838 982,107 982,107
Additions 4,142   32,794
Disposals     (22,437)
Lease reassessments    
Foreign exchange impact     36,374
Ending balance 1,058,258   1,028,838
Cost | Laboratory and testing equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Foreign exchange impact 182,084    
Cost | Laboratory and testing equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance 4,625,420 4,291,785 4,291,785
Additions 0   4,392
Disposals     0
Lease reassessments 0    
Foreign exchange impact     329,243
Ending balance 4,807,504   4,625,420
Accumulated amortization      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance (4,810,014) (3,183,974) (3,183,974)
Disposals     636,490
Charge 1,707,746   2,087,872
Foreign exchange impact (116,195)   (174,658)
Ending balance (6,633,955)   (4,810,014)
Accumulated amortization | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance (3,415,609) (2,064,291) (2,064,291)
Disposals     18,355
Charge 948,550   1,266,037
Foreign exchange impact (88,984)   (103,636)
Ending balance (4,453,143)   (3,415,609)
Accumulated amortization | Right-of-use assets      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance (1,394,405) (1,119,683) (1,119,683)
Disposals     618,135
Charge 759,196   821,835
Foreign exchange impact (27,211)   (71,022)
Ending balance (2,180,812)   (1,394,405)
Accumulated amortization | Buildings | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance (505,552) (358,879) (358,879)
Disposals     0
Charge 66,076   146,673
Foreign exchange impact 0   0
Ending balance (571,628)   (505,552)
Accumulated amortization | Transportation equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance (174,562) (146,327) (146,327)
Disposals     0
Charge 12,271   28,235
Foreign exchange impact 0   0
Ending balance (186,833)   (174,562)
Accumulated amortization | Office and computer equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance (485,968) (337,090) (337,090)
Disposals     18,355
Charge 89,909   131,179
Foreign exchange impact (61,522)   (36,054)
Ending balance (637,399)   (485,968)
Accumulated amortization | Laboratory and testing equipment | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Beginning balance (2,249,527) (1,221,995) (1,221,995)
Disposals     0
Charge 780,294   959,950
Foreign exchange impact (27,462)   (67,582)
Ending balance (3,057,283)   $ (2,249,527)
Accumulated amortization | Exploration and evaluation asset | Total Property and equipment      
Reconciliation of changes in property, plant and equipment [abstract]      
Charge $ 635,762 $ 360,171