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Summary of (Recovery) Loss on Inferior Ingredients (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 06, 2018
Oct. 05, 2019
Oct. 06, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]      
Loss on inferior ingredients $ 2,265 $ 1,409 $ 6,149
Recovery on inferior ingredients (4,156) (1,822) (4,156)
(Recovery) loss on inferior ingredients $ (1,891) $ (413) $ 1,993