Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Income Tax Expense (Benefit)	$ 29,142,000	$ 2,847,000	$ 904,000
Deferred Tax Assets, Net	15,471,000	38,482,000
Valuation allowance related to various deferred income tax assets	27,087,000	5,116,000
Tax reductions due to tax holiday	17,500,000	21,700,000	23,000,000
Tax reduction per basic share due to tax holiday	$ 0.50	$ 0.57	$ 0.58
Aggregate undistributed earnings of foreign subsidiaries	467,100,000
Valuation Allowance Related To Tax Deductions For Stock-Based Compensation	2,300,000
Cash paid for income taxes	9,000,000		3,500,000
Cash refund for income tax		2,200,000
Uncertain tax benefits	7,600,000
Unrecognized tax benefits that would reduce company's effective tax rate if recognized	6,500,000	6,300,000
Total accrued penalties and net accrued interest with respect to income taxes	900,000	700,000	500,000
Expense for accrued penalties and net accrued interest	200,000
United States [Member]
Deferred tax provision	20,600,000
Valuation allowance related to various deferred income tax assets	22,800,000
Deferred tax offset to accumulated other comprehensive income for amounts not able to benefit	2,200,000
GERMANY
Valuation allowance related to various deferred income tax assets	900,000
United Kingdom [Member]
Valuation allowance related to various deferred income tax assets		300,000	200,000
Romania [Member]
Valuation allowance related to various deferred income tax assets	440,000	900,000	600,000
Malaysia [Member]
Income tax holiday, expiration date	2024
China [Member]
Income tax holiday, expiration date	2013
State and Local Jurisdiction [Member]
Net operating loss carryforwards	$ 78,900,000