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Fair Value - Schedule of Carrying Amounts and Estimated Fair Values (Parenthetical) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Unamortized debt discount and issuance costs $ 34,448 $ 9,321
Term B Loan Facility    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Unamortized debt discount and issuance costs $ 34,400 $ 9,300