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INVESTMENT IN JOINT VENTURE - JV Carrying Value Rollforward (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Nov. 30, 2022 | Dec. 31, 2021
Statement [Line Items] |  |  |
Revenue | $ 16,945 |  | $ 20,000
Net income (loss) | 14,354 |  | 18,977
Reconciliation of JCU net assets to Denison investment carrying value: |  |  |
Adjusted net assets of JCU-at December 31, 2021 |  |  | 42,784
Net income (loss) | 14,354 |  | 18,977
Investment from Owners | 1,600 |  |
Net assets of JCU-at December 31, 2022 | $ 38,609 |  |
Denison ownership interest | 50.00% |  |
Total Investment in JCU | $ 19,305 |  | 21,392
JCU |  |  |
Statement [Line Items] |  |  |
Net income (loss) | (5,775) | $ (5,775) |
Reconciliation of JCU net assets to Denison investment carrying value: |  |  |
Net income (loss) | (5,775) | $ (5,775) |
Total Investment in JCU | $ 19,305 |  | $ 21,392

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