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Financial instruments and risk management - Trade receivables (Details) - CAD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Fair Value Disclosures [Abstract] |  |
Not past due | $ 61,443 | $ 53,007
Past due 1-30 days | 7,547 | 8,790
Past due 31-60 days | 521 | 1,772
More than 61 days | 691 | 2,180
Total | $ 70,202 | $ 65,749

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- Definition Accounts Receivable, 1 to 30 Days Past Due + References No definition available. + Details
Name: | noa_AccountsReceivable1To30DaysPastDue
Namespace Prefix: | noa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Accounts Receivable, 31 to 60 Days Past Due + References No definition available. + Details
Name: | noa_AccountsReceivable31To60DaysPastDue
Namespace Prefix: | noa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Accounts Receivable, Current + References No definition available. + Details
Name: | noa_AccountsReceivableCurrent
Namespace Prefix: | noa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Accounts Receivable, Greater than 60 Days Past Due + References No definition available. + Details
Name: | noa_AccountsReceivableGreaterThan60DaysPastDue
Namespace Prefix: | noa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount, after 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/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_AccountsReceivableNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration