Debt (Details Textual) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Sep. 29, 2015	Dec. 30, 2014
Debt (Textual) [Abstract]
Borrowing capacity available under our revolving line of credit	$ 110.0	$ 110.0
Credit agreement period (in days)		95 days
Revolving Facility ($110 million)
Debt (Textual) [Abstract]
Borrowing capacity available under our revolving line of credit	90.9	$ 90.9
Outstanding letters of credit	19.1	$ 19.1
Maximum
Debt (Textual) [Abstract]
Expected payment of long term debt	8.0
Minimum
Debt (Textual) [Abstract]
Expected payment of long term debt	$ 6.0

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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