Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017
Goodwill [Line Items]
Beginning balance	$ 464,777	$ 465,578
Change in goodwill related to acquisition	80,602
Change in goodwill related to divestiture		(801)
Ending balance	545,379	464,777
DSD Segment
Goodwill [Line Items]
Beginning balance	424,563	424,563
Change in goodwill related to acquisition	57,056
Ending balance	481,619	424,563
Warehouse Segment
Goodwill [Line Items]
Beginning balance	40,214	41,015
Change in goodwill related to acquisition	23,546
Change in goodwill related to divestiture		(801)
Ending balance	$ 63,760	$ 40,214

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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