v3.26.1
Segmented disclosure - Schedule of detailed information about operating segments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of operating segments [line items]    
Revenues $ 109,887 $ 124,920
Operating costs (132,640) (145,818)
Professional, consulting and management fees (12,500) (16,304)
Foreign exchange (loss) gain 8,679 (12,517)
Other general and administrative expenses (8,306) (5,429)
Share-based payments (2,289) (1,321)
Finance costs (13,143) (9,460)
Interest income 283 1,523
Technology start-up costs (714) (3,392)
Write-down of vanadium assets 294 (1,119)
Exploration and evaluation costs (216) (2,328)
Gain on disposal of interest in subsidiary 5,179 0
Share of net loss from investment in associate (6,189)  
Total (net) expenses (161,562) (196,165)
Net income (loss) before tax (51,675) (71,245)
Income tax recovery (expense) 0 2,813
Deferred income tax recovery (expense) (17,063) 17,867
Net income (loss) (68,738) (50,565)
Revenues (after inter-segment eliminations) 109,887 124,920
Sales & trading [Member]    
Disclosure of operating segments [line items]    
Revenues 92,421 99,708
Operating costs (77,234) (95,462)
Professional, consulting and management fees (2,971) (2,323)
Foreign exchange (loss) gain (37) (75)
Other general and administrative expenses (3,241) (585)
Share-based payments 0 0
Finance costs (3,291) (678)
Interest income 144 48
Technology start-up costs 0 0
Write-down of vanadium assets 0 0
Exploration and evaluation costs 0 0
Gain on disposal of interest in subsidiary 0  
Share of net loss from investment in associate 0  
Total (net) expenses (86,630) (99,075)
Net income (loss) before tax 5,791 633
Income tax recovery (expense) 0 (101)
Deferred income tax recovery (expense) (2) 19
Net income (loss) 5,789 551
Revenues (after inter-segment eliminations) 91,634 99,708
Mine properties [Member]    
Disclosure of operating segments [line items]    
Revenues 87,357 111,978
Operating costs (116,206) (142,551)
Professional, consulting and management fees (1,958) (1,875)
Foreign exchange (loss) gain 8,707 (12,341)
Other general and administrative expenses (1,273) 1,069
Share-based payments 0 0
Finance costs (9,131) (8,653)
Interest income 25 757
Technology start-up costs 0 0
Write-down of vanadium assets 0 0
Exploration and evaluation costs (198) (2,320)
Gain on disposal of interest in subsidiary 0  
Share of net loss from investment in associate 0  
Total (net) expenses (120,034) (165,914)
Net income (loss) before tax (32,677) (53,936)
Income tax recovery (expense) 0 2,914
Deferred income tax recovery (expense) (18,619) 17,667
Net income (loss) (51,296) (33,355)
Revenues (after inter-segment eliminations) 16,382 24,429
Corporate [Member]    
Disclosure of operating segments [line items]    
Revenues 75,824 92,171
Operating costs (72,893) (89,002)
Professional, consulting and management fees (5,699) (6,086)
Foreign exchange (loss) gain (2) (36)
Other general and administrative expenses (2,565) (2,518)
Share-based payments (2,289) (1,321)
Finance costs (635) 83
Interest income 109 700
Technology start-up costs 0 0
Write-down of vanadium assets 0 0
Exploration and evaluation costs 0 0
Gain on disposal of interest in subsidiary 0  
Share of net loss from investment in associate 0  
Total (net) expenses (83,974) (98,180)
Net income (loss) before tax (8,150) (6,009)
Income tax recovery (expense) 0 0
Deferred income tax recovery (expense) 1,558 181
Net income (loss) (6,592) (5,828)
Revenues (after inter-segment eliminations) 1,871 783
Clean Energy [Member]    
Disclosure of operating segments [line items]    
Revenues 0 0
Operating costs 0 0
Professional, consulting and management fees (1,221) (5,481)
Foreign exchange (loss) gain (6) (27)
Other general and administrative expenses (745) (2,590)
Share-based payments 0 0
Finance costs (3) (39)
Interest income 0 0
Technology start-up costs (714) (3,392)
Write-down of vanadium assets 0 0
Exploration and evaluation costs 0 0
Gain on disposal of interest in subsidiary 5,179  
Share of net loss from investment in associate (6,189)  
Total (net) expenses (3,699) (11,529)
Net income (loss) before tax (3,699) (11,529)
Income tax recovery (expense) 0 0
Deferred income tax recovery (expense) 0 0
Net income (loss) (3,699) (11,529)
Revenues (after inter-segment eliminations) 0 0
Largo Physical Vanadium [Member]    
Disclosure of operating segments [line items]    
Revenues 0 0
Operating costs 0 0
Professional, consulting and management fees (651) (521)
Foreign exchange (loss) gain 17 (38)
Other general and administrative expenses (180) (186)
Share-based payments 0 0
Finance costs (77) (81)
Interest income 5 18
Technology start-up costs 0 0
Write-down of vanadium assets 294 (1,119)
Exploration and evaluation costs 0 0
Gain on disposal of interest in subsidiary 0  
Share of net loss from investment in associate 0  
Total (net) expenses (592) (1,927)
Net income (loss) before tax (592) (1,927)
Income tax recovery (expense) 0 0
Deferred income tax recovery (expense) 0 0
Net income (loss) (592) (1,927)
Revenues (after inter-segment eliminations) 0 0
Inter-segment transactions and other [Member]    
Disclosure of operating segments [line items]    
Revenues (145,715) (178,937)
Operating costs 133,693 181,197
Professional, consulting and management fees 0 (18)
Foreign exchange (loss) gain 0 0
Other general and administrative expenses (302) (619)
Share-based payments 0 0
Finance costs (6) (92)
Interest income 0 0
Technology start-up costs 0 0
Write-down of vanadium assets 0 0
Exploration and evaluation costs (18) (8)
Gain on disposal of interest in subsidiary 0  
Share of net loss from investment in associate 0  
Total (net) expenses 133,367 180,460
Net income (loss) before tax (12,348) 1,523
Income tax recovery (expense) 0 0
Deferred income tax recovery (expense) 0 0
Net income (loss) (12,348) 1,523
Revenues (after inter-segment eliminations) $ 0 $ 0