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Other assets - Schedule of other assets (Details) - CAD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Deferred financing costs | $ 4,845 | $ 5,891
Goodwill | 520 | 526
Loans to affiliates and joint ventures | 112 | 350
Derivative financial instruments | 3,952 | 229
Long-term prepaid lease payments | 416 | 148
Other assets, noncurrent | $ 9,845 | $ 7,144

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