Goodwill And Other Intangible Assets (Changes In Carrying Value Of Routes) (Details) (Routes Intangible Assets [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 30, 2013
Routes Intangible Assets [Member]
Intangible Assets [Line Items]
Beginning balance of routes	$ 20,161
Purchase of route businesses, exclusive of goodwill acquired	7,540
Sale of route businesses	2,967
Change in routes reclassified to assets held for sale	(7,942)
Ending balance of routes	$ 16,792

Carrying amount of assets (excluding financial assets) that lack physical substance, excluding goodwill, having a projected indefinite period of benefit.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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