v3.26.1
Segmented and geographic information, and major customers - Disclosure of segmented information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of operating segments [line items]      
Cash and cash equivalents $ 129,783 $ 20,002 $ 2,061
Trade and other receivables 8,856 7,132  
Inventories 10,668 10,704  
Prepaid expenses 2,542 2,876  
Derivative instruments 4,773 0  
Restricted cash 4,716 4,527  
Investment in Joint Ventures 2,843 0  
Property, plant and equipment 248,815 147,399  
Total assets 412,996 192,640  
Trade and other payables 38,819 37,333  
Derivative instruments 0 709  
Pre-payment facility 0 2,000  
Credit facility 7,440 9,490  
Term loan facility 48,230 0  
Other long-term liabilities 2,446 1,658  
Metals contract liability 41,026 35,804 $ 31,654
Silver contract liability 37,521 14,568  
Convertible debenture 0 10,849  
Royalty payable 2,753 2,762  
Post-employment benefit obligations 2,131 3,892  
Decommissioning provision 11,000 11,389  
Deferred tax liabilities 13 48  
Total liabilities 191,379 130,502  
Revenue 117,934 100,188  
Cost of sales (84,863) (82,740)  
Depletion and amortization (21,234) (24,091)  
Care and maintenance costs (2,459) (4,117)  
Corporate general and administrative (28,598) (8,895)  
Exploration costs (6,066) (5,971)  
Accretion on decommissioning provision (627) (616)  
Interest and financing income (expense) (5,321) (7,375)  
Foreign exchange gain (loss) (1,774) (3,504)  
Gain on disposal of assets 967 18  
Impairment to property, plant and equipment (10,400) 0  
Loss on metals contract liabilities (46,347) (10,183)  
Other gain (loss) on derivatives 6,316 (164)  
Fair value loss on royalty payable (351) (875)  
Income (loss) before income taxes (82,823) (48,325)  
Income tax recovery (expense) (4,623) (679)  
Net income (loss) for the year (87,446) (49,004)  
Cosala Operations [Member]      
Disclosure of operating segments [line items]      
Cash and cash equivalents 7,029 6,576  
Trade and other receivables 6,513 5,485  
Inventories 8,052 7,976  
Prepaid expenses 734 745  
Derivative instruments 0 0  
Restricted cash 153 135  
Investment in Joint Ventures 0 0  
Property, plant and equipment 61,449 48,123  
Total assets 83,930 69,040  
Trade and other payables 14,289 12,650  
Derivative instruments 0 0  
Pre-payment facility 0 0  
Credit facility 7,440 9,490  
Term loan facility 0 0  
Other long-term liabilities 673 0  
Metals contract liability 0 0  
Silver contract liability 0 0  
Convertible debenture 0 0  
Royalty payable 0 0  
Post-employment benefit obligations 0 0  
Decommissioning provision 2,770 2,129  
Deferred tax liabilities 13 48  
Total liabilities 25,185 24,317  
Revenue 57,686 54,111  
Cost of sales (38,524) (42,554)  
Depletion and amortization (6,098) (8,651)  
Care and maintenance costs 0 0  
Corporate general and administrative 0 0  
Exploration costs (3,088) (2,754)  
Accretion on decommissioning provision (216) (236)  
Interest and financing income (expense) (175) (311)  
Foreign exchange gain (loss) (3,064) 1,072  
Gain on disposal of assets 0 0  
Impairment to property, plant and equipment 0 0  
Loss on metals contract liabilities 0 0  
Other gain (loss) on derivatives 0 0  
Fair value loss on royalty payable 0 0  
Income (loss) before income taxes 6,521 677  
Income tax recovery (expense) (4,900) (1,131)  
Net income (loss) for the year 1,621 (454)  
Galena Complex [Member]      
Disclosure of operating segments [line items]      
Cash and cash equivalents 1,990 1,390  
Trade and other receivables 1,370 1,450  
Inventories 2,513 2,625  
Prepaid expenses 1,043 933  
Derivative instruments 0 0  
Restricted cash 53 53  
Investment in Joint Ventures 2,843 0  
Property, plant and equipment 165,587 74,935  
Total assets 175,399 81,386  
Trade and other payables 9,450 8,689  
Derivative instruments 0 0  
Pre-payment facility 0 2,000  
Credit facility 0 0  
Term loan facility 0 0  
Other long-term liabilities 884 1,170  
Metals contract liability 0 0  
Silver contract liability 0 0  
Convertible debenture 0 0  
Royalty payable 0 0  
Post-employment benefit obligations 2,131 3,892  
Decommissioning provision 4,173 5,346  
Deferred tax liabilities 0 0  
Total liabilities 16,638 21,097  
Revenue 60,248 46,077  
Cost of sales (46,339) (40,186)  
Depletion and amortization (11,686) (11,822)  
Care and maintenance costs (558) (581)  
Corporate general and administrative 0 0  
Exploration costs (2,857) (3,107)  
Accretion on decommissioning provision (238) (219)  
Interest and financing income (expense) (379) (408)  
Foreign exchange gain (loss) 0 0  
Gain on disposal of assets 0 0  
Impairment to property, plant and equipment (10,400) 0  
Loss on metals contract liabilities 0 0  
Other gain (loss) on derivatives 0 0  
Fair value loss on royalty payable 0 0  
Income (loss) before income taxes (12,209) (10,246)  
Income tax recovery (expense) 277 452  
Net income (loss) for the year (11,932) (9,794)  
Relief Canyon [Member]      
Disclosure of operating segments [line items]      
Cash and cash equivalents 204 35  
Trade and other receivables 0 0  
Inventories 103 103  
Prepaid expenses 235 755  
Derivative instruments 0 0  
Restricted cash 4,510 4,339  
Investment in Joint Ventures 0 0  
Property, plant and equipment 20,420 23,686  
Total assets 25,472 28,918  
Trade and other payables 3,894 2,896  
Derivative instruments 0 0  
Pre-payment facility 0 0  
Credit facility 0 0  
Term loan facility 0 0  
Other long-term liabilities 0 0  
Metals contract liability 0 0  
Silver contract liability 0 0  
Convertible debenture 0 0  
Royalty payable 0 0  
Post-employment benefit obligations 0 0  
Decommissioning provision 4,057 3,914  
Deferred tax liabilities 0 0  
Total liabilities 7,951 6,810  
Revenue 0 0  
Cost of sales 0 0  
Depletion and amortization (3,221) (3,446)  
Care and maintenance costs (1,901) (3,536)  
Corporate general and administrative 0 0  
Exploration costs (121) (110)  
Accretion on decommissioning provision (173) (161)  
Interest and financing income (expense) 171 54  
Foreign exchange gain (loss) 0 0  
Gain on disposal of assets 967 18  
Impairment to property, plant and equipment 0 0  
Loss on metals contract liabilities 0 0  
Other gain (loss) on derivatives 0 0  
Fair value loss on royalty payable 0 0  
Income (loss) before income taxes (4,278) (7,181)  
Income tax recovery (expense) 0 0  
Net income (loss) for the year (4,278) (7,181)  
Corporate and Other [Member]      
Disclosure of operating segments [line items]      
Cash and cash equivalents 120,560 12,001  
Trade and other receivables 973 197  
Inventories 0 0  
Prepaid expenses 530 443  
Derivative instruments 4,773 0  
Restricted cash 0 0  
Investment in Joint Ventures 0 0  
Property, plant and equipment 1,359 655  
Total assets 128,195 13,296  
Trade and other payables 11,186 13,098  
Derivative instruments 0 709  
Pre-payment facility 0 0  
Credit facility 0 0  
Term loan facility 48,230 0  
Other long-term liabilities 889 488  
Metals contract liability 41,026 35,804  
Silver contract liability 37,521 14,568  
Convertible debenture 0 10,849  
Royalty payable 2,753 2,762  
Post-employment benefit obligations 0 0  
Decommissioning provision 0 0  
Deferred tax liabilities 0 0  
Total liabilities 141,605 78,278  
Revenue 0 0  
Cost of sales 0 0  
Depletion and amortization (229) (172)  
Care and maintenance costs 0 0  
Corporate general and administrative (28,598) (8,895)  
Exploration costs 0 0  
Accretion on decommissioning provision 0 0  
Interest and financing income (expense) (4,938) (6,710)  
Foreign exchange gain (loss) 1,290 (4,576)  
Gain on disposal of assets 0 0  
Impairment to property, plant and equipment 0 0  
Loss on metals contract liabilities (46,347) (10,183)  
Other gain (loss) on derivatives 6,316 (164)  
Fair value loss on royalty payable (351) (875)  
Income (loss) before income taxes (72,857) (31,575)  
Income tax recovery (expense) 0 0  
Net income (loss) for the year $ (72,857) $ (31,575)