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Long-Term Debt - Schedule of Long-Term Debt, Net of Unamortized Debt Issuance Costs (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Debt Disclosure [Abstract]    
Senior notes $ 144,927 $ 45,000
Revolving credit facility 0 0
Total long-term debt 144,927 45,000
Less: Current maturities (45,000) 0
Total maturities due after one year $ 99,927 $ 45,000