Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets Goodwill and Intangible Assets (Details 2)

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Goodwill and Intangible Assets Goodwill and Intangible Assets (Details 2) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Finite-lived Intangible Assets [Roll Forward]      
Beginning balance $ 187,971,000 $ 240,500,000  
Finite-lived Intangible Assets Acquired 70,700,000 0  
Other additions 2,799,000 86,000  
Transfers to developed technology from IPR&D 0 4,400,000  
Amortization 61,318,000 57,015,000 $ 67,947,000
Impairment losses 86,000 0  
Ending balance $ 200,066,000 $ 187,971,000 $ 240,500,000