
		As of March 31, 2026				As of December 31, 2025
(In thousands)	Useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Acquired technology	6 to 7	$	28,563	$	(18,501)	$	21,397	$	(18,237)
Customer relationships	1 to 12	29,762		(24,341)		29,317		(23,679)
Patents, trademarks, and other	10 to 20	5,155		(4,157)		5,080		(4,137)
Total		$	63,480	$	(46,999)	$	55,794	$	(46,053)

Amortization expense was $0.9 million and $0.6 million for the three months ended March 31, 2026 and 2025, respectively. Amortization expense includes cost of sales amortization expense directly related to delivering cloud subscription revenue of $0.2 million for the three months ended March 31, 2026. There was no amortization expense included in cost of sales for the three months ended March 31, 2025. Costs are recorded in "Services and other cost of goods sold" on the condensed consolidated statements of operations.

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 three months ended March 31, 2026 and 2025.