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Intangible Assets

6 Months Ended

Jun. 30, 2023

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Intangible assets as of June 30, 2023 and December 31, 2022 consist of the following:


		As of June 30, 2023				As of December 31, 2022
(In thousands)	Useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Acquired technology	3 to 7	$	43,698	$	42,290	$	42,022	$	41,894
Customer relationships	5 to 12	34,731		24,793		34,386		23,323
Patents, trademarks, and other	10 to 20	13,553		12,271		13,518		12,227
Total		$	91,982	$	79,354	$	89,926	$	77,444

Amortization expense was $0.6 million and $1.2 million for the three months ended June 30, 2023 and 2022, respectively, and $1.2 million and $2.6 million for the six months ended June 30, 2023 and 2022, respectively.

Certain intangible assets are denominated in functional currencies besides the U.S. dollar and are subject to currency fluctuations.

There was no impairment of intangible assets recorded during the six months ended June 30, 2023 and 2022.