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Intangible Assets and Goodwill (Details 3) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Components of intangible assets
Accumulated amortization	$ (256,358)	$ (247,082)
Finite-lived intangible assets	43,024
In-process research and development	2,600
Intangible assets, gross	301,982	301,982
Intangible assets, net	45,624	54,900
In-process research and development
Components of intangible assets
In-process research and development	2,600	2,600
Existing technology
Components of intangible assets
Gross carrying amount	262,789	262,789
Accumulated amortization	(222,171)	(213,354)
Finite-lived intangible assets	40,618	49,435
Customer contracts and contractual relationships
Components of intangible assets
Gross carrying amount	36,293	36,293
Accumulated amortization	(33,887)	(33,428)
Finite-lived intangible assets	$ 2,406	$ 2,865
Non-compete agreements and trademarks
Components of intangible assets
Useful life (in years)	3 years	3 years
Gross carrying amount	$ 300	$ 300
Accumulated amortization	(300)	(300)
Finite-lived intangible assets	$ 0	$ 0
Minimum | Existing technology
Components of intangible assets
Useful life (in years)	3 years	3 years
Minimum | Customer contracts and contractual relationships
Components of intangible assets
Useful life (in years)	6 months	6 months
Maximum | Existing technology
Components of intangible assets
Useful life (in years)	10 years	10 years
Maximum | Customer contracts and contractual relationships
Components of intangible assets
Useful life (in years)	10 years	10 years

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