Financial instruments and risk management - Maximum credit exposure (Details) - CAD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Trade accounts receivable	$ 69,411	$ 65,386
Holdbacks	791	363
Accrued trade receivables	71,933	16,556
Contract receivables, included in accounts receivable	142,135	82,305
Other receivables	23,935	15,550
Total accounts receivable	166,070	97,855
Contract assets	4,135	35,027
Total	$ 170,205	$ 132,882

Accounts Receivable, Holdbacks, Gross, Current

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- Definition

Contract Receivables Included In Accounts Receivable

+ References

No definition available.

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- Definition

Fair Value, Concentration of Risk, Other Receivables

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- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
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- Definition

Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 912
-SubTopic 310
-Name Accounting Standards Codification
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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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- Definition

Fair value of account receivable subject to concentration of credit or market risk or both.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
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- Definition

Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

+ References

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