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Above market acquired charters - Future amortization expense (Table) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Above Market Acquired Charters      
2021 $ 8,417    
2022 8,371    
2023 8,371    
2024 8,326    
2025 1,094    
Total $ 34,579 $ 46,275 $ 60,655