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Long-Term Debt - Schedule of Maturities of Long-term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Total debt, net of unamortized debt discount and debt issuance costs $ 336,678 $ 337,623
Term Loan | 2018 Term Loan Facility    
Debt Instrument [Line Items]    
2020 1,750  
2021 3,500  
2022 3,500  
2023 3,500  
2024 3,500  
Total debt, net of unamortized debt discount and debt issuance costs $ 15,750