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INVENTORIES
 9 Months Ended
Oct. 01, 2022
Inventory [Line Items]  
INVENTORIES INVENTORIES
 
Inventories consisted of the following as of October 1, 2022 and January 1, 2022: 
 October 1, 2022January 1, 2022
Aggregate stockpiles$139,330 $130,640 
Finished goods33,502 22,690 
Work in process10,245 8,277 
Raw materials19,706 19,153 
Total$202,783 $180,760 
Summit Materials, LLC  
Inventory [Line Items]  
INVENTORIES INVENTORIES
 
Inventories consisted of the following as of October 1, 2022 and January 1, 2022:
October 1, 2022January 1, 2022
Aggregate stockpiles$139,330 $130,640 
Finished goods33,502 22,690 
Work in process10,245 8,277 
Raw materials19,706 19,153 
Total$202,783 $180,760