Goodwill and Acquired Intangibles (Tables)

3 Months Ended

Mar. 29, 2014

The changes in the carrying amount of goodwill during the three months ended March 29, 2014 were as follows:



	Gross Carrying Amount
	(In thousands)
Balance as of December 28, 2013	$	456,905
Goodwill resulting from acquisitions	20,756
Effect of foreign currency translation	1,329
Balance as of March 29, 2014	$	478,990

Acquired intangibles as of March 29, 2014 were as follows, excluding intangibles that were fully amortized as of December 28, 2013:



	Gross Carrying Amount		Accumulated Amortization			Acquired Intangibles, Net
	(In thousands)
Existing technology	$	248,836	$	(56,632	)	$	192,204
Agreements and relationships	161,892		(47,679		)	114,213
Tradenames, trademarks and patents	9,719		(3,210		)	6,509
Total acquired intangibles with definite lives	420,447		(107,521		)	312,926
In-process technology	3,572		—			3,572
Total acquired intangibles	$	424,019	$	(107,521	)	$	316,498

Acquired intangibles as of December 28, 2013 were as follows, excluding intangibles that were fully amortized as of December 29, 2012:



	Gross Carrying Amount		Accumulated Amortization			Acquired Intangibles, Net
	(In thousands)
Existing technology	$	237,624	$	(53,243	)	$	184,381
Agreements and relationships	170,760		(53,607		)	117,153
Distribution rights	30,100		(30,100		)	—
Tradenames, trademarks and patents	9,519		(2,870		)	6,649
Total acquired intangibles with definite lives	448,003		(139,820		)	308,183
In-process technology	3,510		—			3,510
Total acquired intangibles	$	451,513	$	(139,820	)	$	311,693

Amortization of acquired intangibles for the three months ended March 29, 2014 and March 30, 2013 was as follows:



	Three Months Ended
	March 29, 2014		March 30, 2013
	(In thousands)
Cost of product and maintenance	$	7,576	$	3,807
Amortization of acquired intangibles	5,210		3,791
Total amortization of acquired intangibles	$	12,786	$	7,598

Estimated amortization expense for intangible assets with definite lives for the following five fiscal years and thereafter is as follows:



	(In thousands)
2014 – remaining period	$	38,792
2015	51,220
2016	45,360
2017	41,550
2018	38,609
Thereafter	97,395
Total estimated amortization expense	$	312,926