FINANCE COSTS - Disclosure of finance costs (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Disclosure Of Finance Costs [Line Items] | ||
| Finance costs | $ 985 | $ 1,357 |
| Accretion on provision for reclamation and rehabilitation [Member] | ||
| Disclosure Of Finance Costs [Line Items] | ||
| Finance costs | 262 | 374 |
| Interest on loans [Member] | ||
| Disclosure Of Finance Costs [Line Items] | ||
| Finance costs | 650 | 834 |
| Interest on lease liabilities [Member] | ||
| Disclosure Of Finance Costs [Line Items] | ||
| Finance costs | 73 | 84 |
| Other financing costs [Member] | ||
| Disclosure Of Finance Costs [Line Items] | ||
| Finance costs | $ 0 | $ 65 |