Commitments and Contingencies (Details)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 22, 2021
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Letters of guarantee and letters of credit     $ 10 $ 10  
Other long term assets     61,900 49,071  
Other Nonoperating Income     $ 6,303 44,750 $ 14,500
Navios Galaxy II          
Date of charter-in agreement     Dec. 31, 2017    
Duration of bareboat contract     10 years    
Vessel capacity in DWT     81,789 dwt    
Contractual Obligation     $ 5,410    
Cash consideration for purchase of vessel       2,705  
Other long term assets     $ 6,704    
Date of delivery     Mar. 30, 2020    
Navios Herakles I          
Duration of bareboat contract     10 years    
Vessel capacity in DWT     82,036 dwt    
Date of delivery     Aug. 28, 2019    
Navios Uranus          
Duration of bareboat contract     10 years    
Vessel capacity in DWT     81,516 dwt    
Date of delivery     Nov. 28, 2019    
Navios Herakles I and Navios Uranus          
Date of charter-in agreement     Jan. 31, 2018    
Contractual Obligation     $ 11,140    
Cash consideration for purchase of vessel       2,800 8,340
Other long term assets     $ 14,070    
Navios Felicity I          
Date of charter-in agreement     Apr. 30, 2018    
Duration of bareboat contract     10 years    
Vessel capacity in DWT     81,946 dwt    
Contractual Obligation     $ 5,590    
Cash consideration for purchase of vessel       2,795 2,795
Other long term assets     $ 7,193    
Date of delivery     Jan. 17, 2020    
Navios Magellan II          
Date of charter-in agreement     Oct. 31, 2018    
Duration of bareboat contract     10 years    
Vessel capacity in DWT     82,037 dwt    
Contractual Obligation     $ 5,820    
Cash consideration for purchase of vessel       $ 2,910 $ 2,910
Other long term assets     $ 7,506    
Date of delivery     May 15, 2020    
Navios Logistics' 2020 fleet | Subsequent Event [Member]          
Cash consideration for purchase of vessel $ 15,000        
Purchase price $ 30,000        
Fixed interest rate 5.00%        
Short term non bank loans and notes payable $ 15,000        
Number of repayment installments 3        
Repayment frequency annual        
Storage And Transshipment Contract          
Other Nonoperating Income     $ 4,102    
Navios Logistics | Storage And Transshipment Contract          
Contractual Obligation   $ 4,140      
Contractual obligation next twelve months     1,380    
Contractual Obligation Due In Second Year     1,380    
Contractual Obligation Due In Third Year     1,380    
Number of installments   3      
Navios Logistics | Vitol S.A.          
Guarantee and indemnity letter     $ 12,000    
Guarantees     Navios Logistics has issued a guarantee and indemnity letter that guarantees the performance by Petrolera San Antonio S.A. (a consolidated subsidiary) of all its obligations to Vitol S.A. up to $12,000. This guarantee expires on March 1, 2022.    
Navios Logistics | Edolmix S.A. and Energias Renovables del Sur S.A.          
Description of guarantee     On July 22, 2016, Navios Logistics guaranteed the compliance of certain obligations related to Edolmix S.A. and Energías Renovables del Sur S.A. (entities wholly owned by Navios Logistics) under their respective direct user agreements with the Free Zone of Nueva Palmira, for the amounts of $847 and $519, respectively.    
Navios Logistics | Edolmix S.A.          
Guarantee and indemnity letter     $ 847    
Navios Logistics | Energias Renovables del Sur S.A.          
Guarantee and indemnity letter     $ 519