Goodwill and Other Intangible Assets

12 Months Ended

Jan. 02, 2021

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 January 2, 2021 and December 28, 2019 (in thousands):

	Year Ended
	January 2,		December 28,
	2021		2019
Beginning balance	$	398,402	$	397,344
Additions due to business combinations		233,530		1,058
Ending balance	$	631,932	$	398,402

Other Intangible Assets

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

	Weighted-Average
	Amortization	January 2, 2021				December 28, 2019
	Period	Gross		Accumulated		Gross		Accumulated
	(Years)	Amount		Amortization		Amount		Amortization
Subject to amortization:
Developed technology	8	$	261,939	$	(125,435)	$	219,695	$	(111,634)
Customer relationships	5		43,245		(31,877)		40,795		(22,742)
Trademarks	5		12,771		(6,312)		12,310		(4,145)
	8		317,955		(163,624)		272,800		(138,521)
Not subject to amortization:
In-process research and development	Not amortized		11,753		—		—		—
Total intangible assets		$	329,708	$	(163,624)	$	272,800	$	(138,521)

Gross intangible assets increased $76.5 million in fiscal 2020 due to assets acquired from Redpine Signals. This increase was offset by $19.6 million for the removal of fully amortized assets.

Amortization expense related to intangible assets for fiscal 2020, 2019 and 2018 was $44.7 million, $39.5 million and $38.0 million, respectively. Research and development expense included intangible asset amortization expense of $33.2 million, $29.5 million and $27.3 million in fiscal 2020, 2019 and 2018, respectively. Selling, general and administrative expense included intangible asset amortization expense of $11.5 million, $10.0 million and $10.7 million in fiscal 2020, 2019 and 2018, respectively. There was no intangible asset amortization expense recorded in cost of revenues in any of the periods presented. 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
2021	$	44,358
2022		33,046
2023		24,324
2024		21,864
2025		12,200