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Other long-term obligations - Schedule of other long term obligations (Details) - CAD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Business Acquisition [Line Items] |  |
DSU liabilities | $ 21,361 | $ 13,159
Long-term contract liabilities | 16,114 | 0
Other | 3,526 | 3,275
Other long term obligations | 134,357 | 18,576
MacKellar |  |
Business Acquisition [Line Items] |  |
Obligation related to acquisition | 93,356 | 0
DGI |  |
Business Acquisition [Line Items] |  |
Obligation related to acquisition | $ 0 | $ 2,142

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