Derivative Instruments (Derivative Instruments Outstanding) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 08, 2012		Oct. 02, 2011
Derivatives, Fair Value [Line Items]
Total liabilities at fair value	$ (40,715)		$ (36,970)
Accrued Liabilities [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total liabilities at fair value			(2,682)
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total liabilities at fair value	(2,564)	[1]	(2,682)	[1]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivatives, Fair Value [Line Items]
Total liabilities at fair value	(2,564)	[2]	(2,682)	[2]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total liabilities at fair value			(2,682)	[1],[2]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Accrued Liabilities [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total liabilities at fair value	$ (2,564)	[1],[2]

[1] We entered into interest rate swaps to reduce our exposure to rising interest rates on our variable debt. The fair values of our interest rate swaps are based upon Level 2 inputs which include valuation models as reported by our counterparties. The key inputs for the valuation models are quoted market prices, interest rates and forward yield curves.

[2] We did not have any transfers in or out of Level 1 or Level 2.