Summary of Loss (Recovery) on Inferior Ingredients (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 13, 2019	Jul. 14, 2018	Jul. 13, 2019	Jul. 14, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Loss on inferior ingredients	$ 110	$ 3,884	$ 1,409	$ 3,884
Recovery on inferior ingredients	$ (110)		(1,822)
Loss (recovery) on inferior ingredients		$ 3,884	$ (413)	$ 3,884