Fair Value Measurements (Schedule Of Financial Liabilities Carried At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012		Sep. 30, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities carried at fair value	$ 2,137		$ 1,891
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities carried at fair value	2,137		1,891
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities carried at fair value
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities carried at fair value
Investments Held In Supplemental Retirement Plan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities carried at fair value	2,137	[1]	1,891	[1]
Investments Held In Supplemental Retirement Plan [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities carried at fair value	2,137	[1]	1,891	[1]
Investments Held In Supplemental Retirement Plan [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities carried at fair value
Investments Held In Supplemental Retirement Plan [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities carried at fair value

[1] These liabilities are included within accrued compensation and benefits and within other non-current liabilities.