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Other financial instruments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Cash flow hedge accounting |  |  |
Total cash flow hedge accounting | $ (5,150) | $ (872) | $ 732
Reserve In O C I [Member] |  |  |
Cash flow hedge accounting |  |  |
Concentrate sales | (6,481) |  |
Mismatches of quotational periods | 1,331 |  |
Total cash flow hedge accounting | (5,150) |  |
Reclassified From O C I To P L [Member] |  |  |
Cash flow hedge accounting |  |  |
Concentrate sales |  |  |
Mismatches of quotational periods | (2,005) |  |
Total cash flow hedge accounting | (2,005) |  |
Ineffectiveness In Other Income And Expenses [Member] |  |  |
Cash flow hedge accounting |  |  |
Concentrate sales |  |  |
Mismatches of quotational periods | 201 |  |
Total cash flow hedge accounting | $ 201 |  |

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- Definition The amount of other comprehensive income, before tax, after reclassification adjustments, related to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income, before tax] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 91 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_91_b&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard -URIDate 2024-03-27 + Details
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- References No definition available. + Details
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- Definition The amount related to concentrate sales hedge accounting effects + References No definition available. + Details
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- Definition The amount related to mismatches of quotational period hedge accounting effects + References No definition available. + Details
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- Details
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