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Long-Term Debt Long-Term Debt - Debt Maturity Schedule (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Long-term Debt, Fiscal Year Maturity    
2024 $ 393,000  
Long-term debt maturities through 2025 $ 393,000  
2022 Notes    
Long-term Debt, Fiscal Year Maturity    
Unamortized debt issuance cost   $ 2,046
Deferred finance cost   $ 2,316