Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 28, 2019

Goodwill and Other Intangible Assets

Summary of goodwill activity

The following summarizes the activity in goodwill for the years ended December 28, 2019 and December 29, 2018 (in thousands):

	Year Ended
	December 28,		December 29,
	2019		2018
Beginning balance	$	397,344	$	288,227
Additions due to business combinations		1,058		109,117
Ending balance	$	398,402	$	397,344

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):

	Weighted-Average
	Amortization	December 28, 2019				December 29, 2018
	Period	Gross		Accumulated		Gross		Accumulated
	(Years)	Amount		Amortization		Amount		Amortization
Core and developed technology	8	$	219,695	$	(111,634)	$	237,265	$	(102,116)
Customer relationships	6		40,795		(22,742)		46,890		(21,075)
Trademarks	7		12,310		(4,145)		12,310		(2,442)
Total	8	$	272,800	$	(138,521)	$	296,465	$	(125,633)

Schedule of estimated aggregate amortization expense for intangible assets subject to amortization

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
2020	$	38,100
2021		33,266
2022		23,801
2023		18,029
2024		15,569