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Intangible Assets and Goodwill (Details 3) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Components of intangible assets |  |
Intangible assets, gross | $ 301,982 | $ 301,982
Accumulated amortization | (274,779) | (265,495)
Intangible assets, net | 27,203 | 36,487
In-process research and development |  |
Components of intangible assets |  |
In-process research and development |  | 1,600
Existing technology |  |
Components of intangible assets |  |
Gross carrying amount | 265,389 | 263,789
Accumulated amortization | (239,875) | (230,950)
Finite-lived intangible assets | $ 25,514 | $ 32,839
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 | $ 36,293 | $ 36,293
Accumulated amortization | (34,604) | (34,245)
Finite-lived intangible assets | $ 1,689 | $ 2,048
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

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