Acquisitions and Purchase Accounting (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 25, 2012	Sep. 27, 2011	Sep. 25, 2012	Sep. 27, 2011
Summary of pro forma net income
Total sales	$ 8,400	$ 245,711	$ 795,045	$ 751,181
Net (loss) Income		$ (362)	$ 14,641	$ 13,209

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration