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Intangible Assets and Goodwill (Details 3) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Components of intangible assets    
Intangible assets, gross $ 301,982 $ 301,982
Accumulated amortization (260,930) (247,082)
Intangible assets, net 41,052 54,900
Finite-lived intangible assets 38,452  
In-process research and development 2,600  
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 (226,564) (213,354)
Finite-lived intangible assets 36,225 49,435
Customer contracts and contractual relationships    
Components of intangible assets    
Gross carrying amount 36,293 36,293
Accumulated amortization (34,066) (33,428)
Finite-lived intangible assets 2,227 2,865
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
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