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CAPITAL MANAGEMENT AND FINANCIAL RISK - Net cash and investment position (Details) - CAD ($) | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
CAPITAL MANAGEMENT AND FINANCIAL RISK [Line item] |  |  |
Cash and cash equivalents | $ 131,054,000 | $ 50,915,000 | $ 63,998,000
Investments | 302,897,000 | 170,645,000 | 147,692,000
Debt obligations-current | (213,000) | (216,000) |
Net cash and investments | 433,738,000 | 221,344,000 |
Total equity | 641,784,000 | 436,016,000 | 396,691,000
Equity instrument |  |  |
CAPITAL MANAGEMENT AND FINANCIAL RISK [Line item] |  |  |
Investments | 10,517,000 | 8,109,000 | 14,578,000
Uranium |  |  |
CAPITAL MANAGEMENT AND FINANCIAL RISK [Line item] |  |  |
Investments | 276,815,000 | 162,536,000 | 133,114,000
Convertible debenture |  |  |
CAPITAL MANAGEMENT AND FINANCIAL RISK [Line item] |  |  |
Investments | $ 15,565,000 | $ 0 | $ 0

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