EXPLORATION AND EVALUATION - Disclosure of detailed information about exploration and evaluation expenditures (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Disclosure Of Exploration [Line Items] | ||
| Exploration and Evaluation | $ 17,925 | $ 9,756 |
| Depreciation and depletion [Member] | ||
| Disclosure Of Exploration [Line Items] | ||
| Exploration and Evaluation | 330 | 311 |
| Share-based compensation [Member] | ||
| Disclosure Of Exploration [Line Items] | ||
| Exploration and Evaluation | 293 | 184 |
| Exploration salaries, wages and benefits [Member] | ||
| Disclosure Of Exploration [Line Items] | ||
| Exploration and Evaluation | 1,975 | 2,918 |
| Direct exploration expenditures [Member] | ||
| Disclosure Of Exploration [Line Items] | ||
| Exploration and Evaluation | 7,335 | 6,343 |
| Evaluation salaries, wages and benefits [Member] | ||
| Disclosure Of Exploration [Line Items] | ||
| Exploration and Evaluation | 1,677 | 0 |
| Direct evaluation expenditures [Member] | ||
| Disclosure Of Exploration [Line Items] | ||
| Exploration and Evaluation | $ 6,315 | $ 0 |