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Basis of Presentation, Organization and Summary of Significant Accounting Policies (Fair Value of Financial Statements) (Details)
12 Months Ended
Oct. 16, 2020
Dec. 31, 2020
Fourth Amended and Restated Credit Agreement | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate spread over variable rate 1.00% 1.625%