Marketable Securities	6 Months Ended
Marketable Securities	Mar. 30, 2012
Marketable Securities [Abstract]
MARKETABLE SECURITIES	MARKETABLE SECURITIES The Company accounts for its investment in marketable securities in accordance with ASC 320-Investments-Debt and Equity Securities, and classifies them as “available for sale.” At March 30, 2012, these securities included $4.0 million of par value auction rate securities ("ARS"), with a carrying value of $3.1 million as compared to the September 30, 2011 balances of $3.2 million and $2.3 million, respectively. The increase in the balances held at March 30, 2012 relates to ARS recognized in the acquisition of AATI with a par and carrying value of approximately $0.8 million. The difference between the par and carrying values is categorized as a temporary loss in other comprehensive income. The Company receives the scheduled interest payments in accordance with the terms of the securities and evaluates the appropriate accounting treatment in each period presented. In addition to the ARS, the Company acquired $20.9 million in US treasury bills from AATI. These securities matured or were sold during the three months ended March 30, 2012.

- Definition

Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.

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