Commitments and Contingencies (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Feb. 10, 2017
Mar. 31, 2017
Jun. 30, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Letters of guarantee and letters of credit       $ 590 $ 590  
Cash consideration for purchase of vessel       0 60,115 $ 0
Other long term assets       4,856 2,647  
Restricted cash       6,558 5,386 13,480
Other income       $ 6,140 18,175 $ 4,840
Navios Logistics            
Collateralized cash amount released   $ 2,900        
Navios Logistics | Letter of Credit            
Restricted cash         2,900  
Navios Acquisition | Revolver            
Maximum borrowing capacity         $ 50,000  
Litigation settlement expense     $ 775      
Settlement agreement date       Jun. 09, 2016    
Lawsuit filing date       Apr. 01, 2016    
Vitol S.A. | Navios Logistics            
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, 2019.    
Vale | Navios Logistics            
Litigation Settlement, Amount Awarded from Other Party $ 21,500          
Other income       $ 1,157    
Three pushboats | Navios Logistics            
Contractual obligation next twelve months       $ 580    
Bulk carrier vessel            
Vessel capacity in DWT       82,000 dwt    
Date of expected delivery       Q4 2019    
Cash consideration for purchase of vessel       $ 2,705    
Other long term assets       2,724    
Contractual Obligation       $ 5,410    
Construction of river and estuary tanker            
Lease Term       5 years    
Construction of river and estuary tanker | Navios Logistics            
Contractual obligation next twelve months       $ 9,024    
Covers for Dry Barges            
Contractual Obligation       1,115    
Covers for Dry Barges | Navios Logistics            
Contractual obligation next twelve months       $ 486