v3.26.1
Deferred income tax - Differences between the accounting and tax basis (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) $ 48,613 $ 101,449
Credit (debit) to consolidated statement of profit or loss (7,867) 53,048
Others   212
Deferred tax liability (asset) 40,746 48,613
Deferred asset    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 268,271 299,370
Credit (debit) to consolidated statement of profit or loss (20,850) (31,311)
Others   212
Deferred tax liability (asset) 247,421 268,271
Deferred asset | Deferred asset for income tax    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 268,271 299,361
Credit (debit) to consolidated statement of profit or loss (20,850) (31,301)
Others   211
Deferred tax liability (asset) 247,421 268,271
Deferred asset | Deferred asset for income tax | Tax - loss carryforwards    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 149,702 189,970
Credit (debit) to consolidated statement of profit or loss (40,952) (40,268)
Others   0
Deferred tax liability (asset) 108,750 149,702
Deferred asset | Deferred asset for income tax | Difference in depreciation and amortization rates    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 50,987 44,425
Credit (debit) to consolidated statement of profit or loss 3,164 6,562
Others   0
Deferred tax liability (asset) 54,151 50,987
Deferred asset | Deferred asset for income tax | Provision for closure of mining units, net    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 29,005 32,578
Credit (debit) to consolidated statement of profit or loss 11,641 (3,573)
Others   0
Deferred tax liability (asset) 40,646 29,005
Deferred asset | Deferred asset for income tax | Provision for impairment of value of inventory    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 9,315 10,585
Credit (debit) to consolidated statement of profit or loss 454 (1,270)
Others   0
Deferred tax liability (asset) 9,769 9,315
Deferred asset | Deferred asset for income tax | Contingent consideration liability    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 8,394 6,391
Credit (debit) to consolidated statement of profit or loss 3,335 2,003
Others   0
Deferred tax liability (asset) 11,729 8,394
Deferred asset | Deferred asset for income tax | Provision for bonuses to employees and officers    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 1,885 2,478
Credit (debit) to consolidated statement of profit or loss 814 (593)
Others   0
Deferred tax liability (asset) 2,699 1,885
Deferred asset | Deferred asset for income tax | Impairment loss of long-lived assets provision    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 1,930 1,930
Credit (debit) to consolidated statement of profit or loss 0 0
Others   0
Deferred tax liability (asset) 1,930 1,930
Deferred asset | Deferred asset for income tax | Contractors claims provisions    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 1,391 371
Credit (debit) to consolidated statement of profit or loss 126 1,020
Others   0
Deferred tax liability (asset) 1,517 1,391
Deferred asset | Deferred asset for income tax | Other    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 15,662 10,633
Credit (debit) to consolidated statement of profit or loss 568 4,818
Others   211
Deferred tax liability (asset) 16,230 15,662
Deferred asset | Deferred assets for mining royalties and special mining tax    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 0 9
Credit (debit) to consolidated statement of profit or loss 0 (10)
Others   1
Deferred tax liability (asset) 0 0
Deferred liability    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) (219,658) (197,921)
Credit (debit) to consolidated statement of profit or loss 12,983 (21,737)
Others   0
Deferred tax liability (asset) (206,675) (219,658)
Deferred liability | Deferred liability for income tax    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) (219,787) (197,895)
Credit (debit) to consolidated statement of profit or loss 10,512 (21,892)
Others   0
Deferred tax liability (asset) (209,275) (219,787)
Deferred liability | Deferred liability for income tax | Difference in depreciation and amortization rates    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) (43,726) (45,267)
Credit (debit) to consolidated statement of profit or loss 1,475 1,541
Others   0
Deferred tax liability (asset) (42,251) (43,726)
Deferred liability | Deferred liability for income tax | Other    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) (19,349) (12,923)
Credit (debit) to consolidated statement of profit or loss 5,691 (6,426)
Others   0
Deferred tax liability (asset) (13,658) (19,349)
Deferred liability | Deferred liability for income tax | Effect of translation into U.S. dollars    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) (55,482) (47,649)
Credit (debit) to consolidated statement of profit or loss 49,600 (7,833)
Others   0
Deferred tax liability (asset) (5,882) (55,482)
Deferred liability | Deferred liability for income tax | Differences in amortization rates for development costs    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) (86,338) (75,108)
Credit (debit) to consolidated statement of profit or loss (23,116) (11,230)
Others   0
Deferred tax liability (asset) (109,454) (86,338)
Deferred liability | Deferred liability for income tax | Fair value of mining concessions    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) (14,892) (14,892)
Credit (debit) to consolidated statement of profit or loss 0 0
Others   0
Deferred tax liability (asset) (14,892) (14,892)
Deferred liability | Deferred liability for income tax | Withdrawal of the sale of Contacto Corredores de Seguros S.A. investment    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 0 (1,220)
Credit (debit) to consolidated statement of profit or loss 0 1,220
Others   0
Deferred tax liability (asset) 0 0
Deferred liability | Deferred liability for income tax | Fair value of account receivables    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 0 (836)
Credit (debit) to consolidated statement of profit or loss (23,138) 836
Others   0
Deferred tax liability (asset) (23,138) 0
Deferred liability | Deferred liability for mining royalties and special mining tax    
Disclosure of Deferred income tax [Line Items]    
Deferred tax liability (asset) 129 (26)
Credit (debit) to consolidated statement of profit or loss 2,471 155
Others   0
Deferred tax liability (asset) $ 2,600 $ 129