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INVENTORIES
6 Months Ended
Jun. 29, 2019
Inventory [Line Items]  
Inventories
INVENTORIES
 
Inventories consisted of the following as of June 29, 2019 and December 29, 2018: 
 
June 29, 2019
 
December 29, 2018
Aggregate stockpiles
$
146,264

 
$
151,300

Finished goods
29,272

 
34,993

Work in process
7,754

 
7,478

Raw materials
24,846

 
20,080

Total
$
208,136

 
$
213,851


Summit Materials, LLC  
Inventory [Line Items]  
Inventories INVENTORIES
 
Inventories consisted of the following as of June 29, 2019 and December 29, 2018:
 
 
June 29, 2019
 
December 29, 2018
Aggregate stockpiles
 
$
146,264

 
$
151,300

Finished goods
 
29,272

 
34,993

Work in process
 
7,754

 
7,478

Raw materials
 
24,846

 
20,080

Total
 
$
208,136

 
$
213,851