v3.26.1
Segmented information (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segmented information      
Other assets (non-current) $ 17,914 $ 31,085  
Mining interests and property, plant and equipment 644,326 593,793  
Exploration and evaluation 89,635 86,258 $ 70,135
Revenues 35,478 4,560  
Cost of sales (13,855) (4,777)  
Other operating costs (46,860) (29,000)  
General and administrative (28,380) (27,430)  
Impairment of assets (28,108) (5,741)  
Operating loss (81,725) (62,388)  
Evaluation and Development Assets      
Segmented information      
Other assets (non-current) 17,914 31,085  
Mining interests and property, plant and equipment 644,326 593,793  
Exploration and evaluation 89,635 86,258  
Total non-current assets (excluding investments) 751,875 711,136  
Canada      
Segmented information      
Revenues   293  
Cost of sales   (224)  
Other operating costs (42,483) (21,561)  
General and administrative (25,059) (23,912)  
Impairment of assets (28,108) (4,894)  
Operating loss (95,650) (50,298)  
Canada | Evaluation and Development Assets      
Segmented information      
Other assets (non-current) 15,791 10,864  
Mining interests and property, plant and equipment 588,776 497,816  
Exploration and evaluation 6,091 4,464  
Total non-current assets (excluding investments) 610,658 513,144  
Mexico | Evaluation and Development Assets      
Segmented information      
Other assets (non-current)   15,499  
Mining interests and property, plant and equipment   32,793  
Total non-current assets (excluding investments)   48,292  
USA      
Segmented information      
Revenues 35,478 4,267  
Cost of sales (13,855) (4,553)  
Other operating costs (4,377) (7,439)  
General and administrative (3,321) (3,518)  
Impairment of assets   (847)  
Operating loss 13,925 (12,090)  
USA | Evaluation and Development Assets      
Segmented information      
Other assets (non-current) 2,123 4,722  
Mining interests and property, plant and equipment 55,550 63,184  
Exploration and evaluation 83,544 81,794  
Total non-current assets (excluding investments) $ 141,217 $ 149,700