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Accrued liabilities (Details) - CAD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accrued Liabilities [Line Items]
Payroll liabilities	$ 28,524	$ 16,082
Current portion of DSU liabilities	0	5,099
Income and other taxes payable	26,515	8,189
Loans from affiliates and joint ventures	11,387	0
Dividends payable	2,674	2,098
Other	3,125	5,594
Accrued liabilities	94,726	43,784
MacKellar
Accrued Liabilities [Line Items]
Obligation and Deferred consideration related to acquisition	20,070	0
Obligation related to DGI acquisition
Accrued Liabilities [Line Items]
Obligation and Deferred consideration related to acquisition	2,431	1,720
Deferred consideration related to ML Northern acquisition
Accrued Liabilities [Line Items]
Obligation and Deferred consideration related to acquisition	$ 0	$ 5,002

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Accrued Liabilities [Line Items]

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Loans From Affiliates And Joint Ventures

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Tire Disposal Liabilities, Current

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.20)
-Publisher FASB
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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-Publisher FASB
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Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable within one year (or the operating cycle, if longer).

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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