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ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES - Intangible Assets By Type (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 01, 2023
Apr. 02, 2022
Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]      
Accumulated Amortization $ (16,428)   $ (15,503)
Amortization expense 900 $ 900  
Intangible Assets Excluding Intangible Assets Held for Sale      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 86,913   86,887
Accumulated Amortization (16,428)   (15,503)
Net Carrying Amount 70,485   71,384
Operating permits      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 38,677   38,677
Accumulated Amortization (4,498)   (4,109)
Net Carrying Amount 34,179   34,568
Mineral leases      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 17,766   18,091
Accumulated Amortization (7,005)   (7,056)
Net Carrying Amount 10,761   11,035
Reserve rights      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 25,586   25,242
Accumulated Amortization (4,402)   (3,872)
Net Carrying Amount 21,184   21,370
Other      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 4,884   4,877
Accumulated Amortization (523)   (466)
Net Carrying Amount 4,361   4,411
Summit Materials, LLC      
Finite-Lived Intangible Assets [Line Items]      
Accumulated Amortization (16,428)   (15,503)
Amortization expense 900 $ 900  
Summit Materials, LLC | Intangible Assets Excluding Intangible Assets Held for Sale      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 86,913   86,887
Accumulated Amortization (16,428)   (15,503)
Net Carrying Amount 70,485   71,384
Summit Materials, LLC | Operating permits      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 38,677   38,677
Accumulated Amortization (4,498)   (4,109)
Net Carrying Amount 34,179   34,568
Summit Materials, LLC | Mineral leases      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 17,766   18,091
Accumulated Amortization (7,005)   (7,056)
Net Carrying Amount 10,761   11,035
Summit Materials, LLC | Reserve rights      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 25,586   25,242
Accumulated Amortization (4,402)   (3,872)
Net Carrying Amount 21,184   21,370
Summit Materials, LLC | Other      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 4,884   4,877
Accumulated Amortization (523)   (466)
Net Carrying Amount $ 4,361   $ 4,411