Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets, net, other than goodwill, at December 31, 2021 and 2020 are summarized as follows:


	2021						2020
(in thousands)	Gross a		Accumulated Amortization		Net		Gross a		Accumulated Amortization		Net		Weighted Average Useful Life Remaining (in years)
Intangible assets with finite lives:
Customer relationships	$	53,062	$	(45,613)	$	7,449	$	71,123	$	(56,682)	$	14,441	2.8
Acquired technology	17,518		(5,430)		12,088		42,472		(41,201)		1,271		5.2
Trade names	20,448		(10,438)		10,010		17,477		(16,506)		971		18.9
Patent costs	21,852		(11,812)		10,040		19,828		(10,999)		8,829		10.5
Trade secrets	19,924		(18,971)		953		20,188		(18,216)		1,972		1.1
Acquired patents	16,257		(15,945)		312		16,317		(15,723)		594		6.1
Other	12,982		(7,999)		4,983		19,793		(19,788)		5		9.4
Total intangible assets	$	162,043	$	(116,208)	$	45,835	$	207,198	$	(179,115)	$	28,083	8.5

a.Change in gross carrying amounts primarily due to divestitures of Cimatron, Simbionix and ODM partially offset by the acquisition of Oqton and foreign currency translation.