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Long-term debt, net - Maturities of Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Debt Disclosure [Abstract]    
2020 $ 0  
2021 0  
2022 260,000  
2023 100,000  
2024 0  
Thereafter 0  
Total $ 360,000 $ 294,000