(Schedule Additional Information About The Company's Convertible Notes) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2012	Sep. 30, 2011	Mar. 02, 2007
Debt Disclosure [Abstract]
Equity component of the convertible notes outstanding	$ 0	$ 6,061
Principal amount of convertible subordinated notes issued	0	26,677	200,000
Unamortized discount of the liability component	0	588
Net carrying amount of the liability component	$ 0	$ 26,089

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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