Related Party Transactions (Details) (USD $)	1 Months Ended	12 Months Ended
Feb. 28, 2009	Sep. 30, 2011	Oct. 01, 2010	Oct. 02, 2009
Related Party Transactions [Abstract]
Ownership interest in dpiX Holding LLC		40.00%
dpiX Holding LLC's ownership interest in dpiX LLC		100.00%
(Gain) loss on equity investment in affiliate		$ (4,276,000)	$ 732,000	$ 905,000
Loan agreement, related party	14,000,000
Related party loan agreement, interest rate	prime plus 1%
Notes receivable from related parties		8,800,000	8,800,000
Carrying value of the equity investment		46,700,000	45,100,000
Purchases of glass transistor arrays from dpiX		$ 23,300,000	$ 34,600,000	$ 26,400,000

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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+ Details