Goodwill and Identified Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill and Identified Intangibles Assets [Abstract]

Summary of goodwill and identifiable intangible assets

The following is a summary of goodwill and identified intangible assets as of December 31, 2011 and 2010:

	December 31, 2011							December 31, 2010
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(In thousands)
Identifiable intangibles:
Developed core technology	$	136,145	$	(81,951	)	$	54,194	$	127,146	$	(60,453	)	$	66,693
In-process technology		—		—			—		9,000		—			9,000
Customer relationships/contracts		67,098		(42,142	)		24,956		67,098		(36,117	)		30,981
Trademarks and tradenames		11,361		(7,700	)		3,661		11,361		(6,060	)		5,301
Supply agreements		3,414		(3,414	)		—		3,414		(3,414	)		—
Maintenance agreements and related relationships		7,100		(2,260	)		4,840		7,100		(1,008	)		6,092
Software license, intellectual property and assembled workforce		309		(309	)		—		309		(306	)		3
Order backlog		2,800		(2,800	)		—		2,800		(2,800	)		—
Total of identifiable intangibles	$	228,227	$	(140,576	)	$	87,651	$	228,228	$	(110,158	)	$	118,070

Changes in the carrying amount of goodwill

The changes in the carrying amount of goodwill for the years ended December 31, 2011 and 2010 are as follows:

	December 31,
	2011			2010
	(In thousands)
Balance at beginning of period	$	211,878		$	63,953
Adjustment to deferred tax liability associated with the acquisition of Omneon		(527	)		—
Adjustment to fixed assets associated with the acquisition of Omneon		298			—
Adjustment to income tax payable associated with the acquisition of Omneon		771			—
Adjustment to deferred tax liability associated with the acquisition of Scopus					786
Acquisition of Omneon					147,208
Foreign currency translation adjustment		(3	)		(69	)
Balance at end of period	$	212,417		$	211,878

Estimated future amortization expense of purchased intangible assets

	Cost of Revenue		Operating Expenses		Total
	(In thousands)
Year ended December 31,
2012		20,503		8,716		29,219
2013		19,232		8,096		27,328
2014		13,745		6,775		20,520
2015		714		5,783		6,497
2016		—		4,087		4,087
Total	$	54,194	$	33,457	$	87,651