Fair Value of Financial Instruments - Assets measured at Fair Value on a Non-Recurring Basis (Table) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Vessels, port terminals and other fixed assets, net $ 38,054 $ 62,397
Operating lease assets 10,018 89,945
Total 48,072 152,342
Quoted Prices in Active Markets for Identical Assets (Level I)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Vessels, port terminals and other fixed assets, net 6,644 7,497
Total 6,644 7,497
Significant Other Observable Inputs (Level II)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Vessels, port terminals and other fixed assets, net 31,410 54,900
Operating lease assets 10,018 89,945
Total $ 41,428 $ 144,845