Assets Held for Sale (Detail) - USD ($) $ in Thousands	Apr. 20, 2019	Dec. 29, 2018
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	$ 6,743	$ 6,606
Distributor Territories
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	3,334	3,188
Property, Plant and Equipment
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	$ 3,409	$ 3,418

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