Derivative Financial Instruments (Details 2) (USD $)	9 Months Ended
Sep. 27, 2014	Sep. 27, 2014 Other assets, net	Dec. 28, 2013 Other assets, net
Derivative Financial Instruments
Gains or losses from the hedging instrument which was excluded from the assessment of effectiveness	$ 0
Derivative financial instrument
Fair value of interest rate swap		$ 507,000	$ 513,000

The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959

Name:	us-gaap_GainLossOnCashFlowHedgeIneffectivenessNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration