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Goodwill and Loss on Impairment of Assets - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Goodwill [Line Items]    
Tradenames $ 150,610 $ 225,573
Trade Names    
Goodwill [Line Items]    
Impairment of intangible assets, finite-lived 51,400  
Tradenames $ 5,825