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Reclamation Obligations - Additional information (Details) - CAD ($) | Dec. 31, 2024 | Dec. 31, 2023
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Reclamation Obligations [Line Items] |  |
Deposit by Joint Venture Partner |  | $ 99,000
Chartered Bank | Letters Of Credit |  |
Reclamation Obligations [Line Items] |  |
Total borrowing | $ 992,000 |
Elliot Lake |  |
Reclamation Obligations [Line Items] |  |
Discounted rate | 5.72% | 5.45%
Undiscounted amount of estimated future reclamation costs | $ 44,127,000 | $ 45,283,000
MLJV and MWJV |  |
Reclamation Obligations [Line Items] |  |
Discounted rate | 5.72% | 5.45%
Undiscounted amount of estimated future reclamation costs | $ 24,789,000 | $ 24,333,000
Total borrowing | $ 22,972,000 |
Wheeler River and Other |  |
Reclamation Obligations [Line Items] |  |
Discounted rate | 5.72% | 5.45%
Undiscounted amount of estimated future reclamation costs | $ 2,829,000 | $ 3,260,000

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