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Income Taxes Income tax expense reconciliation (Details) (USD $) In Thousands | 12 Months Ended
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Sep. 30, 2011 | Oct. 01, 2010 | Oct. 02, 2009
Tax expense at United States statutory rate | $ 102,860 | $ 68,276 | $ 24,415
Foreign tax rate difference | (24,394) | (8,889) | (580)
Deemed dividend from foreign subsidiary | 43 | 884 | 774
Research and development credits | (17,720) | (5,820) | (7,211)
Change in tax reserve | 9,405 | 4,413 | 295
Change in valuation allowance | 2,152 | 2,834 | (39,089)
Non deductible debt retirement premium | 0 | 64 | (3,508)
Alternative minimum tax | 0 | 0 | (958)
Domestic production activities deduction | (6,055) | (2,263) | 0
International restructuring | 0 | (3,468) | 0
Other, net | 1,010 | 1,749 | 635
Provision (benefit) for income taxes | $ 67,301 | $ 57,780 | $ (25,227)

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