SUMMARY OF OTHER LIABILITIES (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|
| Notes and other explanatory information [abstract] | ||||||||
| Post Employment Benefits (note 11() | [1] | $ 11,956 | $ 12,608 | |||||
| Lease liability | 33 | 867 | ||||||
| Other taxes payable (note 11() | [2] | 3,609 | 5,106 | |||||
| Long-term portion of current income taxes payable | 419 | 713 | ||||||
| Participation payable to COMIBOL for interest in joint operation (note 11() | [3] | 4,929 | 8,873 | |||||
| Other liabilities | 2,661 | 1,250 | ||||||
| Balance, end of the period | 23,607 | 29,417 | ||||||
| Less: current portion | (7,777) | (8,876) | ||||||
| Non-current portion | $ 15,830 | $ 20,541 | ||||||
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