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Note 7 - Intangible Assets

12 Months Ended

Dec. 31, 2022

Intangible Assets Disclosure [Text Block]

In connection with our acquisitions of Mirametrix, Inc. in November 2021, Silicon Image, Inc. in March 2015, and SiliconBlue Technologies, Inc. in December 2011, we recorded identifiable intangible assets related to developed technology, customer relationships, licensed technology, patents, and in-process research and development based on guidance for determining fair value under the provisions of ASC 820, "Fair Value Measurements." We are amortizing the intangible assets using the straight-line method over their estimated useful lives. Additionally, we have entered into license agreements for third-party technology and recorded them as intangible assets. These licenses are being amortized to Research and development expense over their estimated useful lives. No impairment charges relating to acquired intangible assets were recorded for fiscal 2022, 2021, or 2020.

The following tables summarize the details of our Intangible assets, net as of December 31, 2022 and January 1, 2022:

	*December 31, 2022*
(In thousands)	*Weighted Average Amortization Period (in years)*	*Gross*		*Accumulated Amortization*			*Intangible assets, net*
Existing technology	5.1	$	124,487	$	(113,157	)	$	11,330
Customer relationships	6.1		32,734		(24,509	)		8,225
Trade name / trademarks	10.0		1,500		(169	)		1,331
Licensed technology	6.3		6,671		(2,487	)		4,184
Total identified intangible assets		$	165,392	$	(140,322	)	$	25,070

	*January 1, 2022*
(In thousands)	*Weighted Average Amortization Period (in years)*	*Gross*		*Accumulated Amortization*			*Intangible assets, net*
Existing technology	5.1	$	124,487	$	(111,090	)	$	13,397
Customer relationships	6.1		32,734		(22,947	)		9,787
Trade name / trademarks	10.0		1,500		(19	)		1,481
Licensed technology	6.3		6,551		(1,434	)		5,117
Total identified intangible assets		$	165,272	$	(135,490	)	$	29,782

We recorded amortization expense related to intangible assets on the Consolidated Statements of Operations as presented in the following table:

	Year Ended
	December 31,		January 1,		January 2,
(In thousands)	2022		2022		2021
Research and development	$	1,054	$	901	$	124
Amortization of acquired intangible assets		3,778		2,613		4,449
	$	4,832	$	3,514	$	4,573

The annual expected amortization expense of acquired intangible assets is as follows:

Fiscal year	(In thousands)
2023	$	4,522
2024		4,310
2025		4,263
2026		4,261
2027		4,197
Thereafter		3,517
Total	$	25,070