Fair Value Measurements (Effect of Changes in the Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 30, 2016	Jan. 01, 2016
Rabbi Trust Assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in fair value, loss (income)	$ 202	$ 63

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

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