REVENUE- Disclosure of disaggregation of revenue from contracts with customers (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Disclosure of products and services [line items] | ||
| Total revenue from concentrate sales | $ 56,828 | $ 55,502 |
| Refined metal sales | 108,492 | 82,959 |
| Total revenue | 165,320 | 138,461 |
| Concentrate Sales [Member] | ||
| Disclosure of products and services [line items] | ||
| Total revenue from concentrate sales | 57,011 | 54,264 |
| Provisional Pricing Adjustments [Member] | ||
| Disclosure of products and services [line items] | ||
| Total revenue from concentrate sales | $ (183) | $ 1,238 |