Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	$ (2,188)	$ 7,385	$ 3,014	$ 7,814
Income Tax Effect - Benefit/(Expense)	(206)us-gaap_OtherComprehensiveIncomeLossTax	(123)us-gaap_OtherComprehensiveIncomeLossTax	502us-gaap_OtherComprehensiveIncomeLossTax	(268)us-gaap_OtherComprehensiveIncomeLossTax
Net Of Tax	(5,139)	1,453	(10,369)	1,070
Realized (Gains) - Investment Securities	(218)	(224)	(204)	(296)
Income Tax Effect - (Benefit)/Expense	13	80	27	106
Net Of Tax	(5,344)	1,309	(10,546)	880
Balance, End Of Period	(7,532)	8,694	(7,532)	8,694
Unrealized Gains/Losses On Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	328	308	505	203
Unrealized Gains (Losses)	1,554	336	1,169	571
Income Tax Effect - Benefit/(Expense)	(507)	(120)	(327)	(204)
Net Of Tax	1,047	216	842	367
Realized (Gains) - Investment Securities	(218)	(224)	(204)	(296)
Income Tax Effect - (Benefit)/Expense	13	80	27	106
Net Of Tax	842	72	665	177
Balance, End Of Period	1,170	380	1,170	380
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	(2,516)	7,077	2,509	7,611
Unrealized Gains (Losses)	(6,487)	1,240	(12,040)	767
Income Tax Effect - Benefit/(Expense)	301	(3)	829	(64)
Net Of Tax	(6,186)	1,237	(11,211)	703
Net Of Tax	(6,186)	1,237	(11,211)	703
Balance, End Of Period	$ (8,702)	$ 8,314	$ (8,702)	$ 8,314

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Reclassification From Accumulated Other Comprehensive Income, Current Period, Tax

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount before tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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