Goodwill And Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2011

Goodwill and Intangible Assets Disclosure [Abstract]

ScheduleofIntangibleAssetsExcludingGoodwillTextBlock [Table Text Block]

Intangible assets consist of the following (in thousands):

		As of							As of
	Weighted Average Amortization Period Remaining (Years)	September 30, 2011							October 1, 2010
		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizing intangible assets
Developed technology	1.9	$	20,660	$	(13,751	)	$	6,909	$	14,150	$	(10,862	)	$	3,288
Customer relationships	3.6	57,510		(21,828		)	35,682		21,510		(15,894		)	5,616
Patents and other	4.0	53,896		(13,548		)	40,348		5,966		(5,630		)	336
Total amortizing intangibles		132,066		(49,127		)	82,939		41,626		(32,386		)	9,240
Nonamortizing intangible assets
Trademarks		3,869		—			3,869		3,269		—			3,269
Total intangible assets		$	135,935	$	(49,127	)	$	86,808	$	44,895	$	(32,386	)	$	12,509

ChangesinGrossCarryingAmountofGoodwillandIntangibleAssetsTextBlock [Table Text Block]

The changes in the gross carrying amount of goodwill and intangible assets are as follows (in thousands):

	Goodwill			Developed Technology		Customer Relationships		Patents and Other		Nonamortizing Trademarks		Total
Balance as of October 2, 2009	$	482,893		$	13,750	$	21,510	$	5,966	$	3,269	$	527,388
Additions during period	2,731			400		—		—		—		3,131
Deductions during year	(37		)	—		—		—		—		(37		)
Balance as of October 1, 2010	485,587			14,150		21,510		5,966		3,269		530,482
Additions during period	177,529			6,510		36,000		47,930		600		268,569
Deductions during year	(75		)	—		—		—		—		(75		)
Balance as of September 30, 2011	$	663,041		$	20,660	$	57,510	$	53,896	$	3,869	$	798,976

Schedule Of Expected Annual Amortization Expense Related To Intangible Assets For The Next Five Years

Annual amortization expense for the next five years related to intangible assets is expected to be as follows (in thousands):

	2012		2013		2014		2015		2016
Amortization expense	$	25,599	$	19,810	$	15,211	$	13,172	$	9,147