Leasing Arrangements (Tables)

12 Months Ended

Dec. 29, 2018

Lease Rental Expenses [Line Items]

Minimum Contractual Commitments for the Subsequent Five Years under Long-Term Operating Leases

Minimum contractual commitments for the subsequent five years under long-term operating leases and under royalty agreements are as follows:

	Operating		Royalty
	Leases		Agreements
2019	$	9,479	$	7,124
2020	8,101		6,929
2021	6,701		6,665
2022	4,279		6,742
2023	3,411		6,656

Summit Materials, LLC

Lease Rental Expenses [Line Items]

Minimum Contractual Commitments for the Subsequent Five Years under Long-Term Operating Leases

Minimum contractual commitments for the subsequent five years under long-term operating leases and under royalty agreements are as follows:

	Operating		Royalty
	Leases		Agreements
2019	$	9,479	$	7,124
2020	8,101		6,929
2021	6,701		6,665
2022	4,279		6,742
2023	3,411		6,656