Borrowing Arrangements (Schedule Additional Information About The Company's 1.50% Notes) (Details) (USD $) In Thousands	Sep. 30, 2011	Oct. 01, 2010
Debt Instrument [Line Items]
Equity component of the convertible notes outstanding	$ 6,061	$ 6,061
Principal amount of the convertible notes	26,677	26,677
Unamortized discount of the liability component	588	1,934
Net carrying amount of the liability component	$ 26,089	$ 24,743

Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

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