Goodwill And Intangible Assets (Tables)

3 Months Ended

Dec. 30, 2011

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill are as follows (in thousands):

	Goodwill
Balance as of September 30, 2011	$	663,041
Goodwill impairment	—
Goodwill recognized through business combinations	—
Goodwill adjustments	980
Goodwill as of December 30, 2011	$	664,021

Schedule of Intangible Assets Excluding Goodwill

Intangible assets consist of the following (in thousands):

		As of							As of
	Weighted Average Amortization Period Remaining (Years)	December 30, 2011							September 30, 2011
		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed technology	1.6	$	20,660	$	(14,672	)	$	5,988	$	20,660	$	(13,751	)	$	6,909
Customer relationships	3.7	57,510		(24,698		)	32,812		57,510		(21,828		)	35,682
Patents and other	4.2	53,416		(15,883		)	37,533		53,896		(13,548		)	40,348
Trademarks	Indefinite	3,869		—			3,869		3,869		—			3,869
Total intangible assets		$	135,455	$	(55,253	)	$	80,202	$	135,935	$	(49,127	)	$	86,808

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):

	Remaining 2012		2013		2014		2015		2016
Amortization expense	$	19,278	$	19,525	$	15,211	$	13,172	$	9,147