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Long-term Debt - Schedule of Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Long-term debt    
Less: current portion $ (2,843) $ (2,843)
Long-term debt 272,118 274,295
2023 Term Loans    
Long-term debt    
2023 Term Loans, due March 26, 2023 274,961 277,138
Less: current portion (2,843) (2,843)
Long-term debt $ 272,118 $ 274,295