Summary of Total Costs and Recoveries (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Oct. 06, 2018	Jul. 14, 2018	Oct. 06, 2018
Basis of Presentation [Line Items]
Loss (recovery) on inferior ingredients	$ (1,891)	$ 3,884	$ 1,993
Expense recognized	2,265
Recovery recognized	(4,156)
DSD Segment
Basis of Presentation [Line Items]
Loss (recovery) on inferior ingredients		$ 3,884	898
Expense recognized	1,170
Recovery recognized	(4,156)
Warehouse Segment
Basis of Presentation [Line Items]
Loss (recovery) on inferior ingredients	1,095		$ 1,095
Expense recognized	$ 1,095