Goodwill and Other Intangible Assets

12 Months Ended

Dec. 28, 2019

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

9. Goodwill and Other Intangible Assets

Goodwill

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

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)

Gross intangible assets decreased $26.6 million in fiscal 2019 due to the removal of fully amortized assets. This decrease was offset by $3.0 million for the addition of certain assets acquired from Qulsar.

Amortization expense related to intangible assets for fiscal 2019, 2018 and 2017 was $39.5 million, $38.0 million and $27.1 million, respectively. 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