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Debt - Loan Payments (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Long-term Debt, Fiscal Year Maturity [Abstract]    
2020 $ 4,688  
2021 21,562  
2022 22,500  
2023 203,935  
Long-term debt 252,685 $ 272,800
Long-term debt 252,685 272,800
Revolving Loans    
Long-term Debt, Fiscal Year Maturity [Abstract]    
Long-term debt 160,010 152,000
Long-term debt $ 160,010 $ 152,000