Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 28, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill balances and activity were as follows (in thousands):

	Fiscal years ended
	December 28, 2014			December 29, 2013
Balance, beginning of year	$	318,111		$	201,735
Acquisition	513,398			115,775
Adjustment	(181		)	601
Balance, end of year	$	831,328		$	318,111

Intangible Assets

Intangible asset balances were as follows (in thousands):

	December 28, 2014
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed product technology	$	568,744	$	(209,478	)	$	359,266
Customer relationships	64,600		(21,009		)	43,591
Trademarks and trade names	62,500		(7,395		)	55,105
Acquisition-related intangible assets	695,844		(237,882		)	457,962
Technology licenses and patents	102,000		(78,611		)	23,389
Total intangible assets subject to amortization	797,844		(316,493		)	481,351
Acquired in-process research and development	61,000		—			61,000
Total intangible assets	$	858,844	$	(316,493	)	$	542,351

	December 29, 2013
	Gross Carrying Amount		Accumulated Amortization			Impairment			Net Carrying Amount
Developed product technology	$	348,385	$	(121,304	)	$	(44,216	)	$	182,865
Customer relationships	20,650		(14,426		)	—			6,224
Trademarks	14,200		(3,634		)	(2,812		)	7,754
Covenants not to compete	3,100		(2,959		)	—			141
Acquisition-related intangible assets	386,335		(142,323		)	(47,028		)	196,984
Technology licenses and patents	133,909		(89,289		)	—			44,620
Total intangible assets subject to amortization	520,244		(231,612		)	(47,028		)	241,604
Acquired in-process research and development	42,500		—			(36,200		)	6,300
Total intangible assets	$	562,744	$	(231,612	)	$	(83,228	)	$	247,904

Estimated Amortization Expense of Intangible Assets

The annual expected amortization expense of intangible assets subject to amortization as of December 28, 2014 was as follows (in thousands):

	Acquisition-related Intangible Assets		Technology Licenses and Patents
Fiscal year:
2015	$	152,375	$	20,056
2016	109,971		3,333
2017	90,916		—
2018	66,260		—
2019	38,440		—
Total intangible assets subject to amortization	$	457,962	$	23,389