Fair value measurement - Contingent consideration (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
Jun. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|---|---|
| Fair value measurement | ||||
| Contingent consideration | $ 166,105 | $ 141,711 | ||
| Royalty Deed | ||||
| Fair value measurement | ||||
| Contingent consideration | 46,515 | 47,661 | $ 46,420 | $ 43,985 |
| Contingent copper consideration | ||||
| Fair value measurement | ||||
| Contingent consideration | $ 119,590 | $ 94,050 | $ 94,400 | $ 84,200 |