Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012
Income Tax Expense (Benefit)	$ 6,112,000	$ 2,724,000	$ 29,142,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	7,900,000	7,000,000	24,100,000
Deferred Tax Assets, Net	8,692,000	8,246,000
Valuation allowance related to various deferred income tax assets	41,935,000	34,075,000
Tax reductions due to tax holiday	24,100,000	22,700,000	17,500,000
Income Tax Holiday, Income Tax Benefits Per Share	$ 0.71	$ 0.66	$ 0.50
Valuation Allowance Related To Tax Deductions For Stock-Based Compensation	4,500,000
Aggregate Undistributed Earnings Of Foreign Subsidiaries	687,600,000
Operating Loss Carryforwards	89,500,000
Cash paid for income taxes	9,000,000	5,300,000	9,000,000
Uncertain tax benefits	2,400,000
Rate Reconciliation Impact of Settlement of Uncertain Tax Positions	4.10%
Unrecognized tax benefits that would reduce company's effective tax rate if recognized	1,100,000	5,300,000
Total accrued penalties and net accrued interest with respect to income taxes	200,000	1,100,000	900,000
Expense for accrued penalties and net accrued interest	100,000
Benefit Settlement of US Tax Examinations [Domain]
Uncertain tax benefits	3,800,000
UNITED STATES
Valuation Allowance, Deferred Tax Asset, Change in Amount			22,800,000
EMEA Region [Member]
Valuation Allowance, Deferred Tax Asset, Change in Amount	4,200,000		1,300,000
AMER and EMEA [Member]
Valuation Allowance, Deferred Tax Asset, Change in Amount		5,200,000
United Kingdom [Member]
Valuation Allowance, Deferred Tax Asset, Change in Amount		1,800,000
Out-of-period tax errors [Member]
Valuation Allowance, Deferred Tax Asset, Change in Amount		3,200,000
AMER Region [Member]
Valuation Allowance, Deferred Tax Asset, Change in Amount	3,900,000
APAC Region [Member]
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 200,000