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INVESTMENTS - Rollforward (Details) | 12 Months Ended
--- | ---
Dec. 31, 2022 CAD ($) | Dec. 31, 2021 CAD ($) | Dec. 31, 2021 USD ($)
Statement [Line Items] |  |  |
Investments beginning balance | $ 147,692,000 | $ 16,950,000 |
Investments-uranium beginning balance | 133,114,000 |  |
Purchase of investments | 0 | 91,674,000 |
Sale of investments |  | (12,826,000) |
Change in fair value gain to profit and (loss) | 55,327,000 | 44,163,000 |
Change in fair value gain to profit and (loss) | 22,953,000 | 51,894,000 |
Investments-uranium ending balance | 162,536,000 | 133,114,000 |
Investments ending balance | 170,645,000 | 147,692,000 |
Equity Instruments |  |  |
Statement [Line Items] |  |  |
Investments beginning balance | 14,578,000 | 16,950,000 |
Purchase of investments |  | 0 |
Sale of investments |  | (12,826,000) |
Change in fair value gain to profit and (loss) | (6,469,000) | 10,454,000 |
Investments ending balance | 8,109,000 | 14,578,000 |
Physical Uranium |  |  |
Statement [Line Items] |  |  |
Investments beginning balance | 133,114,000 |  |
Investments-uranium beginning balance | 133,114,000 | 0 |
Purchase of investments |  | 91,674,000 | $ 74,140,000
Sale of investments |  | 0 |
Change in fair value gain to profit and (loss) | 29,422,000 | 41,440,000 |
Investments-uranium ending balance | 162,536,000 | 133,114,000 |
Investments ending balance | $ 162,536,000 | $ 133,114,000 |

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