Assets Held for Sale (Detail) - USD ($) $ in Thousands	Oct. 06, 2018	Dec. 30, 2017
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	$ 4,589	$ 15,323
Distributor Territories
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	3,391	13,584
Property, Plant and Equipment
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	$ 1,198	$ 1,739

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant