Debt - Narrative (Details) - USD ($) $ in Millions		6 Months Ended
Mar. 31, 2016	Jun. 28, 2016	Dec. 29, 2015
Debt (Textual) [Abstract]
Credit agreement period		95 days
Prepayment amount	$ 3.3
Revolving Facility ($110 million)
Debt (Textual) [Abstract]
Borrowing capacity available under our revolving line of credit		$ 80.4	$ 80.9
Outstanding letters of credit		$ 29.6	$ 29.1

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

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