Intangible Assets and Goodwill (Details 3) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Components of intangible assets
Intangible assets, gross	$ 331,908	$ 349,421
Accumulated amortization	(299,893)	(298,541)
Finite-lived intangible assets	24,615
In-process research and development	7,400
Intangible assets, net	32,015	50,880
Divestiture, not discontinued operations \| PHY IP group
Components of intangible assets
Disposal group, intangible assets	7,400
In-process research and development
Components of intangible assets
In-process research and development	7,400	11,200
In-process research and development \| Divestiture, not discontinued operations \| PHY IP group
Components of intangible assets
Disposal group, intangible assets	3,800
Existing technology
Components of intangible assets
Gross carrying amount	286,712	299,925
Accumulated amortization	(262,663)	(261,708)
Finite-lived intangible assets	$ 24,049	$ 38,217
Existing technology \| Minimum
Components of intangible assets
Useful life (in years)	3 years	3 years
Existing technology \| Maximum
Components of intangible assets
Useful life (in years)	10 years	10 years
Customer contracts and contractual relationships
Components of intangible assets
Gross carrying amount	$ 37,496	$ 37,996
Accumulated amortization	(36,930)	(36,533)
Finite-lived intangible assets	$ 566	$ 1,463
Customer contracts and contractual relationships \| Minimum
Components of intangible assets
Useful life (in years)	6 months	6 months
Customer contracts and contractual relationships \| Maximum
Components of intangible assets
Useful life (in years)	10 years	10 years
Non-compete agreements and trademarks
Components of intangible assets
Gross carrying amount	$ 300	$ 300
Accumulated amortization	(300)	(300)
Finite-lived intangible assets	$ 0	$ 0
Useful life (in years)	3 years	3 years

Amount classified as intangible assets, excluding goodwill, attributable to disposal group held for sale or disposed of, expected to be disposed of beyond one year or the normal operating cycle, if longer.

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