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RESTRICTED CASH AND INVESTMENTS (Details) - CAD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Statement [Line Items] |  |
Restricted cash and investments | $ 11,231 | $ 11,105
Cash and cash equivalents |  |
Statement [Line Items] |  |
Restricted cash and investments | 3,259 | 3,133
Investments |  |
Statement [Line Items] |  |
Restricted cash and investments | 7,972 | 7,972
Elliot Lake reclamation trust fund |  |
Statement [Line Items] |  |
Restricted cash and investments | 3,259 | 3,133
Letters of credit facility pledged assets |  |
Statement [Line Items] |  |
Restricted cash and investments | $ 7,972 | $ 7,972

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