Provisions - Schedule reconciliation of beginning and ending aggregate carrying amount of the provision (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of other provisions [line items] | ||
| Balance - Beginning of period | $ 1,577 | $ 6,283 |
| Changes in estimated cash flows and discount rates | 214 | (3,929) |
| Accretion | 130 | 314 |
| Effect of foreign exchange | 111 | (1,091) |
| Balance - End of period | 2,032 | 1,577 |
| Maracas Menchen Mine [Member] | ||
| Disclosure of other provisions [line items] | ||
| Balance - Beginning of period | 1,138 | 5,712 |
| Changes in estimated cash flows and discount rates | 226 | (3,891) |
| Accretion | 94 | 284 |
| Effect of foreign exchange | 77 | (967) |
| Balance - End of period | 1,535 | 1,138 |
| Currais Novos Tungsten [Member] | ||
| Disclosure of other provisions [line items] | ||
| Balance - Beginning of period | 439 | 571 |
| Changes in estimated cash flows and discount rates | (12) | (38) |
| Accretion | 36 | 30 |
| Effect of foreign exchange | 34 | (124) |
| Balance - End of period | $ 497 | $ 439 |