v3.26.1
Property, plant and equipment (Tables)
12 Months Ended
Dec. 31, 2025
Property, plant and equipment [abstract]  
Disclosure of detailed information about property, plant and equipment [Table Text Block]
                             Corporate        
     Mining      Non-producing      Plant and      Right-of-use      office        
     interests       properties      equipment       lease assets      equipment      Total  
                                     
Cost                                    
Balance at January 1, 2024 $ 226,819   $ 12,469   $ 128,228   $ 11,685   $ 237   $ 379,438  
Asset additions   14,226     -     4,794     789     -     19,809  
Change in decommissioning provision   (1,420 )   -     -     -     -     (1,420 )
Balance at December 31, 2024   239,625     12,469     133,022     12,474     237     397,827  
Asset additions   111,652     -     19,202     2,933     308     134,095  
Asset disposals   -     -     -     (31 )   -     (31 )
Change in decommissioning provision   (1,014 )   -     -     -     -     (1,014 )
Balance at December 31, 2025 $ 350,263   $ 12,469   $ 152,224   $ 15,376   $ 545   $ 530,877  
                                     
Accumulated depreciation and depletion                                    
Balance at January 1, 2024 $ (132,474 ) $ -   $ (85,440 ) $ (8,223 ) $ (200 ) $ (226,337 )
Depreciation/depletion for the year   (14,172 )   -     (8,615 )   (1,278 )   (26 )   (24,091 )
Balance at December 31, 2024   (146,646 )   -     (94,055 )   (9,501 )   (226 )   (250,428 )
Depreciation/depletion for the year   (11,233 )   -     (7,741 )   (2,249 )   (11 )   (21,234 )
Impairment for the year   -     -     (10,400 )   -     -     (10,400 )
Balance at December 31, 2025 $ (157,879 ) $ -   $ (112,196 ) $ (11,750 ) $ (237 ) $ (282,062 )
                                     
Carrying value                                    
   at December 31, 2024 $ 92,979   $ 12,469   $ 38,967   $ 2,973   $ 11   $ 147,399  
   at December 31, 2025 $ 192,384   $ 12,469   $ 40,028   $ 3,626   $ 308   $ 248,815