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Debt - Debt Maturities (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Long-term debt maturities for years ending December 31:    
2021 to 2022 $ 0  
2023 240,984  
2024 0  
2025 192,500  
Total $ 433,484 $ 433,484