Cost of sales - Disclosure of components of cost of sales (Details) - USD ($) $ in Thousands |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Disclosure Of Cost Of Sales [Abstract] | ||
| Salaries and employee benefits | $ 28,815 | $ 32,097 |
| Raw materials and consumables | 20,676 | 34,027 |
| Utilities | 4,190 | 4,439 |
| Transportation costs | 2,344 | 5,212 |
| Other costs | 7,782 | 7,063 |
| Costs before intended use | 20,845 | 1,949 |
| Changes in inventories | (3,459) | (3,346) |
| Inventory write-downs | 3,670 | 1,299 |
| Cost of sales | $ 84,863 | $ 82,740 |
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Represents change in concentrates and ore stock pile. No definition available.
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- References No definition available.
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- Definition Represents disclosure of cost of sales [Abstract]. No definition available.
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- Definition It represents the inventory write downs. No definition available.
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