Related Party Transactions - Additional Information (Detail) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018 Supplier	Dec. 29, 2018 USD ($)	Dec. 30, 2017 USD ($)
Related Party Transaction [Line Items]
Rental payments based upon the terms of the lease			$ 1.6
Lease expiration date	Dec. 31, 2022
Joint Venture [Member]
Related Party Transaction [Line Items]
Minority interests in number of suppliers | Supplier	3
Canada [Member]
Related Party Transaction [Line Items]
Rental payments based upon the terms of the lease			$ 0.1
Lease expiration date	Oct. 31, 2018
Scenario, Forecast [Member]
Related Party Transaction [Line Items]
Rental payments based upon the terms of the lease		$ 1.6
Scenario, Forecast [Member] | Canada [Member]
Related Party Transaction [Line Items]
Rental payments based upon the terms of the lease		$ 0.5