Inventories (Tables)

12 Months Ended

Dec. 29, 2018

Inventory [Line Items]

Components of Inventories

Inventories consisted of the following as of December 29, 2018 and December 30, 2017:

	2018		2017
Aggregate stockpiles	$	151,300	$	126,791
Finished goods	34,993		34,667
Work in process	7,478		7,729
Raw materials	20,080		15,252
Total	$	213,851	$	184,439

Summit Materials, LLC

Inventory [Line Items]

Components of Inventories

Inventories consisted of the following as of December 29, 2018 and December 30, 2017:

	2018		2017
Aggregate stockpiles	$	151,300	$	126,791
Finished goods	34,993		34,667
Work in process	7,478		7,729
Raw materials	20,080		15,252
Total	$	213,851	$	184,439