Derivative financial instruments - Additional information (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Disclosure of derivative financial instruments [Line Items] | |||
| Unrealized gain (loss) before tax | $ (6,232,000) | $ 10,696,000 | |
| Effect on settlement of hedging financial instruments | $ 0 | 0 | 818,000 |
| Interest rate hedge | |||
| Disclosure of derivative financial instruments [Line Items] | |||
| Unrealized gain (loss) before tax | 644,000 | ||
| Effect on settlement of hedging financial instruments | 818,000 | ||
| Unrealized gain (loss) net of tax income | 454,000 | ||
| Copper and Zinc prices hedge | |||
| Disclosure of derivative financial instruments [Line Items] | |||
| Unrealized gain (loss) before tax | (8,839,000) | 15,171,000 | |
| Unrealized gain (loss) net of tax income | $ (6,232,000) | $ 10,696,000 | |