Information Regarding Operations in Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Oct. 06, 2012	Oct. 08, 2011	Oct. 06, 2012	Oct. 08, 2011
Segment Reporting Information [Line Items]
Sales	$ 717,282	$ 675,369	$ 2,297,049	$ 2,119,790
Depreciation and amortization	24,757	22,816	76,751	71,706
Income from operations	52,691	47,763	159,325	152,392
Net interest (expense) income	(3,568)	265	(6,527)	2,623
Income before income taxes	49,123	48,028	152,798	155,015
DSD
Segment Reporting Information [Line Items]
Sales	601,360	560,630	1,918,617	1,745,625
Sales	592,250	553,768	1,893,957	1,725,198
Depreciation and amortization	20,716	18,069	62,684	56,103
Income from operations	58,571	46,955	173,962	162,513
Warehouse Delivery
Segment Reporting Information [Line Items]
Sales	149,723	145,808	487,551	479,958
Sales	125,032	121,601	403,092	394,592
Depreciation and amortization	4,067	4,600	14,140	15,249
Income from operations	7,566	7,305	23,480	23,753
Sales From Warehouse Delivery To DSD
Segment Reporting Information [Line Items]
Sales	(24,691)	(24,207)	(84,459)	(85,366)
Sales From DSD To Warehouse Delivery
Segment Reporting Information [Line Items]
Sales	(9,110)	(6,862)	(24,660)	(20,427)
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	(26)	147	(73)	354
Income from operations	$ (13,446)	$ (6,497)	$ (38,117)	$ (33,874)

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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The net amount of operating interest income (expense).

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The net result for the period of deducting operating expenses from operating revenues.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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