Loans and borrowings (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Loans and borrowings | ||
| Current | $ 42,255 | $ 58,266 |
| Non-current | 325,321 | 344,925 |
| Total | 367,576 | 403,191 |
| Mezzanine debt facility | ||
| Loans and borrowings | ||
| Non-current | 95,003 | |
| Senior syndicated facility | ||
| Loans and borrowings | ||
| Current | 21,328 | 38,644 |
| Non-current | 194,492 | 116,032 |
| Copper stream | ||
| Loans and borrowings | ||
| Current | 10,726 | 10,275 |
| Non-current | 75,250 | 75,636 |
| Silver stream | ||
| Loans and borrowings | ||
| Current | 10,201 | 9,347 |
| Non-current | $ 55,579 | $ 58,254 |