Employee Stock Award, Option and Benefit Plans - Deferred Compensation Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Share-based Compensation, Allocation and Classification in Financial Statements [Line Items]
Cash surrender value of life insurance contracts	$ 12,780	$ 12,999
Fair value of mutual funds	13,891	15,000
Total assets	26,671	27,999
Deferred Compensation Plan other assets	25,131	26,484
Total deferred compensation liability, included in:
Other current liabilities	1,540	1,515
Other long-term liabilities	26,691	27,858
Total deferred compensation liability	28,231	29,373
Changes in obligation to plan participants	(200)	4,300	$ 2,800
Gain (Loss) on Deferred Compensation Plan Investments	(400)	4,200	$ 2,100
Death benefit
Total deferred compensation liability, included in:
Gain (Loss) on Deferred Compensation Plan Investments		100
Prepaid expenses and other assets
Share-based Compensation, Allocation and Classification in Financial Statements [Line Items]
Total assets	1,540	1,515
Other Assets [Member]
Share-based Compensation, Allocation and Classification in Financial Statements [Line Items]
Deferred Compensation Plan other assets	$ 25,131	$ 26,484