Identified Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2012

Identified Intangible Assets

Identified Intangible Assets

Identified intangible assets were comprised of the following:

	December 31,
	2012					2011
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(In thousands)
Current technology	$	930,767	$	(751,236	)	$	857,367	$	(702,500	)
Customer base		444,439		(304,725	)		402,739		(269,409	)
Patent licensing		312,800		(198,346	)		312,800		(167,728	)
Order backlog		4,500		(4,500	)		—		—
Trade names		1,800		(680	)		300		(300	)
Workforce		3,567		(3,567	)		3,567		(3,046	)
In-process research and development		51,300		—			—		—
Total identified intangible assets	$	1,749,173	$	(1,263,054	)	$	1,576,773	$	(1,142,983	)

Amortization Expense and Weighted-Average Lives of Identified Intangible Assets

The following table summarizes amortization expense and the weighted-average lives of identified intangible assets:

	Weighted- Average Lives		Year Ended December 31,
			2012		2011		2010
	(In months)		(In thousands)
Current technology		52	$	48,736	$	49,243	$	77,808
Customer base		47		35,316		33,921		36,440
Patent licensing		36		30,618		32,125		36,220
Order backlog		3		4,500		—		—
Trade names		55		380		50		148
Workforce		72		521		596		596
Total		48	$	120,071	$	115,935	$	151,212

Estimated Annual Future Amortization Expenses Related to Identified Intangible Assets

The estimated annual future amortization expenses related to identified intangible assets as of December 31, 2012 are as follows:

	Amortization Expense
	(In thousands)
Years ending December 31:
2013	$	122,353
2014		131,307
2015		107,125
2016		92,934
2017 and thereafter		32,400
Total	$	486,119

Changes in Carrying Amount of Goodwill

The following table summarizes goodwill activity:

	Goodwill
	(In thousands)
Balance as of December 31, 2011	$	72,377
Addition due to SandForce acquisition		182,628
Balance as of December 31, 2012	$	255,005