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Supplemental Financial Information - Other (expense) income (Details) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | $ (31,249) | $ 136,472
Investments-equity instruments |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | (4,934) | (9)
Gains (losses) on - Foreign exchange |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | 2,278 | 321
Gains (losses) on - Disposal of property, plant and equipment |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | 162 | 1,299
Fair value changes - Investments-uranium |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | (32,129) | 134,180
Investments-convertible debentures |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | (2,565) | 565
Reclamation obligation adjustments |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | 1,823 | (3,229)
Gain on recognition of proceeds-UI Repayment Agreement |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | 5,256 | 4,097
Uranium investment carrying charges |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | (919) | (409)
Other |  |
Supplemental Financial Information [Line Items] |  |
Other (expense) income - continuing operations | $ (221) | $ (343)

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- Definition The gains (losses) that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 102 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 103 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_103&doctype=Standard -URIDate 2024-03-27 + Details
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