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Long-Term Debt - Required Annual Loan Payments (Table) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Debt Disclosure [Abstract]    
2021 $ 37,210  
2022 37,210  
2023 110,703  
2024 20,933  
2025 79,853  
Thereafter 93,753  
Total $ 379,662 $ 262,385