Assets Held for Sale (Detail) - USD ($) $ in Thousands	Jul. 11, 2020	Dec. 28, 2019
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	$ 7,605	$ 4,408
Distributor Territories
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	3,225	3,016
Property, Plant and Equipment
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	$ 4,380	$ 1,392