Other financial instruments (Details 5) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| IfrsStatementLineItems [Line Items] | ||
| Balance at the beginning of the year | $ (19,666) | $ (19,565) |
| Changes in fair value | (49,254) | (3,347) |
| Deliveries of copper concentrates | ||
| Price cap realized | 5,011 | 3,246 |
| Balance at the end of the year | (63,909) | (19,666) |
| Notional [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Balance at the beginning of the year | 22,288 | 27,562 |
| Changes in fair value | ||
| Deliveries of copper concentrates | (3,626) | (5,274) |
| Price cap realized | ||
| Balance at the end of the year | $ 18,662 | $ 22,288 |