Annual report pursuant to Section 13 and 15(d)

Intangible Assets, Net and Goodwill (Narrative) (Details)

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Intangible Assets, Net and Goodwill (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]      
Amortization of Intangible Assets   $ 3,000,000.0 $ 2,500,000
Impairment of intangible assets (excluding goodwill) $ 17,500,000 0 0
Goodwill, Impairment Loss $ 0 $ 0 $ 0