v3.26.1
Taxes - Schedule of detailed information about changes in deferred income tax balances (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax assets $ 5,012 $ 22,075  
Net deferred income tax asset 5,012 22,075 $ 7,495
Non-capital losses [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax assets 46,124    
Brazil [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Net deferred income tax asset 0 18,619  
Brazil [Member] | Non-capital losses [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax assets 15,343 28,493  
Brazil [Member] | Provisions and other [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax liabilities (4,666) (4,124)  
Brazil [Member] | Mine properties, plant and equipment [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax assets 1,422 1,235  
Brazil [Member] | Transitional tax regime [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax liabilities (12,099) (6,985)  
Canada [Member] | Non-capital losses [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax assets 4,991 3,433  
U.S. [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Net deferred income tax asset 21 23  
U.S. [Member] | Non-capital losses [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax assets 7 1,038  
U.S. [Member] | Provisions and other [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax assets 21 23  
U.S. [Member] | Mine properties, plant and equipment [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Recognized deferred tax liabilities $ (7) $ (1,038)