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Credit Agreement - Quarterly Financial Covenants (Details) - Line of Credit
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Required Minimum Value    
Line of Credit Facility [Line Items]    
EBITDA to fixed charges ratio 1.15  
Total net leverage ratio 3.25  
Actual Value    
Line of Credit Facility [Line Items]    
EBITDA to fixed charges ratio 4.77  
Total net leverage ratio   0.60