Long-term debt - Schedule of long term debt (Details) - CAD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Long-term Debt, Excluding Current Maturities [Abstract]
Equipment financing	$ 692,619	$ 420,541
Unamortized deferred financing costs	(3,514)	(4,371)
Less: current portion of long-term debt	(81,306)	(42,089)
Long-term portion of debt	611,313	378,452
Long-term Debt, Fiscal Year Maturity [Abstract]
2024	83,000
2025	64,300
2026	412,100
2027	28,800
2028 and thereafter	107,800
Credit Facility
Long-term Debt, Excluding Current Maturities [Abstract]
Long-term debt, gross	317,488	180,000
Convertible debentures
Long-term Debt, Excluding Current Maturities [Abstract]
Long-term debt, gross	129,750	129,750
Equipment financing
Long-term Debt, Excluding Current Maturities [Abstract]
Equipment financing	220,466	85,931
Mortgage
Long-term Debt, Excluding Current Maturities [Abstract]
Long-term debt, gross	$ 28,429	$ 29,231

Long-Term Debt, Maturity, Year Five And Thereafter

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, classified as current.

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Amount of long-term debt and lease obligation, including portion classified as current.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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