Fair Value (Details 1) (USD $) In Thousands, unless otherwise specified			9 Months Ended
Sep. 27, 2014	Dec. 28, 2013	Sep. 27, 2014 Fair Value Measurements, Level 3 [Member]
Liabilities included in level 3 representing fair value of contingent consideration associated with acquisitions
Begining Balance	$ 0	$ 4,091	$ 4,091
Payments			(2,329)
Adjustments			(1,762)
Ending Balance	$ 0	$ 4,091

Amount of liability recognized arising from contingent consideration in a business combination.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 25

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 35

-Paragraph 1

-Subparagraph b

-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

Name:	us-gaap_BusinessCombinationContingentConsiderationLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant