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DEFERRED REVENUE (Details) | Dec. 31, 2021 CAD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CAD ($) | Dec. 31, 2019 CAD ($)
--- | --- | --- | --- | ---
Statement [Line Items] |  |  |  |
Current deferred revenue | $ 4,656,000 |  | $ 3,478,000 |
Deferred revenue (note 11) | 31,852,000 |  | 33,139,000 |
Total deferred revenue | 36,508 | $ 36,508 | 36,617 | $ 36,321
Deferred revenue-by balance sheet presentation |  | $ 36,508 | 36,617 |
CLJV Toll Milling APG |  |  |  |
Statement [Line Items] |  |  |  |
Total deferred revenue | $ 36,508 |  | $ 36,617 |

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