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 | ||