Stock-Based Compensation (Narrative) (Details)	3 Months Ended
Dec. 25, 2011 plans
Share-based Compensation [Abstract]
Number of equity-based compensation plans	1
Employee stock plan purchase price of fair value	15.00%
Number of opportunities to purchase common stock at discount, per year	2

The discount rate from market value on purchase date that participants pay for shares.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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