Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 28, 2013

Goodwill and Other Intangible Assets

Summary of goodwill activity

The following summarizes the activity in goodwill for the years ended December 28, 2013 and December 29, 2012 (in thousands):

	Year Ended
	December 28, 2013		December 29, 2012
Beginning balance	$	130,265	$	115,489
Additions due to business combinations		98,516		14,776
Ending balance	$	228,781	$	130,265

Schedule of gross carrying amount and accumulated amortization of other intangible assets

 The gross carrying amount and accumulated amortization of other intangible assets are as follows (in thousands):

		December 28, 2013					December 29, 2012
	Weighted-Average Amortization Period (Years)
		Gross Amount		Accumulated Amortization			Gross Amount		Accumulated Amortization
Intangible assets:
Subject to amortization:
Core and developed technology	9	$	138,340	$	(41,782	)	$	95,420	$	(30,145	)
Customer relationships	9		14,500		(2,330	)		8,100		(1,057	)
Patents	6		3,000		(750	)		3,000		(250	)
Trademarks	10		2,210		(195	)		910		(38	)
	9		158,050		(45,057	)		107,430		(31,490	)
Not subject to amortization:
In-process research and development	Not amortized		18,600		—			14,810		—
Total intangible assets		$	176,650	$	(45,057	)	$	122,240	$	(31,490	)

Schedule of estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years

The estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years is as follows (in thousands):

Fiscal Year
2014	$	17,060
2015		16,669
2016		16,019
2017		15,052
2018		14,309