Intangible Assets

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

9. Intangible Assets

The components of our purchased intangible assets as of December 31, 2022 are as follows (in thousands):

	Useful Lives	FY 2022 Annual Amortization		Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Useful Lives Remaining
Customer relations	15 Years	$	30	$	340	$	230	$	110	4.21 Years
Developed technology	7 Years		165		1,900		272		1,628	6.10 Years
Trade names	9 Years		33		300		61		239	7.17 Years
Patents	Varies		—		600		600		—	Varies
		$	228	$	3,140	$	1,163	$	1,977

The components of our purchased intangible assets as of January 1, 2022 are as follows (in thousands):

	Useful Lives	FY 2021 Annual Amortization			Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Useful Lives Remaining
Customer relations	15 Years	$	28		$	340	$	200	$	140	5.08 Years
Developed technology	7 Years		107	—		900		107		793	6.17 Years
Trade names	9 Years		28	—		300		28		272	8.17 Years
In-process R&D	7 Years		—	—		1,000		—		1,000	Not applicable
Patents	Varies		—			600		600		—	Varies
		$	163		$	3,140	$	935	$	2,205

Aggregate amortization expense for fiscal years 2022 and 2021 were $228 thousand and $163 thousand, respectively. The amortization of developed technology was charged to research and development expense and the amortization of customer relations and trade names was charged to sales and marketing expense. We started amortization of in-process R&D in the fourth fiscal quarter of 2022, as it was related to the release of a new system.

Estimated future amortization expense for purchased intangible assets is as follows (in thousands):

Fiscal Year:
2023	$	335
2024		335
2025		323
2026		319
2027		319
Thereafter		346
Total	$	1,977