Related Party Transactions - Additional Information (Detail)	12 Months Ended
	Dec. 30, 2017 USD ($) Supplier	Dec. 31, 2016 USD ($)	Dec. 26, 2015 USD ($)
Related Party Transaction [Line Items]
Total annual rental payments to the partnership / corporation under the lease arrangement	$ 1,600,000	$ 1,600,000	$ 1,600,000
Lease expiration date	Dec. 31, 2022
Lease effective date	Jan. 01, 2018
Joint Venture [Member]
Related Party Transaction [Line Items]
Minority interests in number of suppliers | Supplier	3
Purchases from Suppliers	$ 21,400,000	16,500,000	9,900,000
Canada [Member]
Related Party Transaction [Line Items]
Total annual rental payments to the partnership / corporation under the lease arrangement	$ 100,000	$ 0	$ 0
Lease expiration date	Oct. 31, 2018