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Cover
 12 Months Ended
Dec. 31, 2024
shares
Document Information [Line Items]  
Document Type 40-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2024
Current Fiscal Year End Date --12-31
Entity File Number 001-33161
Entity Registrant Name North American Construction Group Ltd.
Entity Incorporation, State or Country Code Z4
Entity Primary SIC Number 1629
Entity Address, Address Line One 27287 - 100 Avenue
Entity Address, City or Town Acheson,
Entity Address, State or Province AB
Entity Address, Postal Zip Code T7X 6H8
City Area Code (780)
Local Phone Number 960-7171
Title of 12(b) Security Common Shares
Trading Symbol NOA
Security Exchange Name NYSE
Annual Information Form true
Audited Annual Financial Statements true
Entity Common Stock, Shares Outstanding 27,704,450
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Emerging Growth Company false
ICFR Auditor Attestation Flag true
Document Financial Statement Error Correction false
Entity Central Index Key 0001368519
Amendment Flag false
Document Fiscal Year Focus 2024
Document Fiscal Period Focus FY
Business Contact  
Document Information [Line Items]  
Entity Address, Address Line One 111 Eighth Avenue
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10011
City Area Code 212
Local Phone Number 894-8940
Contact Personnel Name CT Corporation System
Entity Address, Address Line Two 13th Floor