Segment Reporting (Information Regarding Operations in the Reportable Segments) (Details) (USD $) In Thousands	3 Months Ended	6 Months Ended
Jul. 16, 2011	Jul. 17, 2010	Jul. 16, 2011	Jul. 17, 2010
DEPRECIATION AND AMORTIZATION	$ 20,898	$ 20,021	$ 48,890	$ 45,658
INCOME FROM OPERATIONS	43,111	51,236	104,629	113,276
NET INTEREST INCOME	596	956	2,358	2,087
INCOME BEFORE INCOME TAXES	43,707	52,192	106,987	115,363
DSD [Member]
SALES	530,765	495,540	1,184,996	1,149,318
DEPRECIATION AND AMORTIZATION	16,167	15,463	38,034	35,565
INCOME FROM OPERATIONS	51,339	47,787	115,558	108,470
Warehouse Delivery [Member]
SALES	142,346	143,590	334,148	328,535
DEPRECIATION AND AMORTIZATION	4,593	4,533	10,649	10,069
INCOME FROM OPERATIONS	5,117	11,841	16,448	25,374
From Warehouse Delivery To DSD [Member]
REVENUES FROM TRANSACTIONS WITH OTHER OPERATING SEGMENTS OF SAME ENTITY	(24,330)	(25,793)	(61,157)	(61,886)
From DSD To Warehouse Delivery [Member]
REVENUES FROM TRANSACTIONS WITH OTHER OPERATING SEGMENTS OF SAME ENTITY	(6,185)	(5,621)	(13,566)	(13,225)
Unallocated [Member]
DEPRECIATION AND AMORTIZATION	138	25	207	24
INCOME FROM OPERATIONS	$ (13,345)	$ (8,392)	$ (27,377)	$ (20,568)

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph h
-Subparagraph 1(i)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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- Definition

The net amount of operating interest income (expense).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 10
-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.10)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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Amount of revenue from transactions with other operating segments of the same entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-Paragraph 27
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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