Vessels, Port Terminals and Other Fixed Assets, Net (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jan. 12, 2016
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Jun. 03, 2016
Mar. 31, 2016
Property Plant And Equipment [Line Items]            
Cash consideration for purchase of vessel   $ 60,115 $ 0      
Purchase price obligation   18,555   $ 20,649    
Repayments of obligations under capital leases   2,094 709      
Payments for construction in progress   44,628 6,625      
Vessels, Port Terminals and Other Fixed Assets            
Property Plant And Equipment [Line Items]            
Capitalized interest costs   $ 5,175   5,847    
Navios Sphera            
Property Plant And Equipment [Line Items]            
Year Built   2016        
Date of delivery   Jan. 12, 2016        
Vessel capacity in DWT   84,872 dwt        
Total purchase price   $ 34,352        
Navios Sphera and Navios Mars            
Property Plant And Equipment [Line Items]            
Cash consideration for purchase of vessel $ 49,910          
Amount transferred to vessels' cost           $ 29,695
Amount of loan used to finance purchase of vessel $ 39,900          
Navios Mars            
Property Plant And Equipment [Line Items]            
Year Built   2016        
Date of delivery   Jan. 12, 2016        
Vessel capacity in DWT   181,259 dwt        
Total purchase price   $ 55,458        
Navios Logistics            
Property Plant And Equipment [Line Items]            
Total consideration paid for acquisition   $ 17,000        
Navios Logistics | Ferni H            
Property Plant And Equipment [Line Items]            
Purchase price obligation     5,325      
Expiration date of the capital lease agreement   January 2020        
Navios Logistics | San San H            
Property Plant And Equipment [Line Items]            
Purchase price obligation     5,150      
Expiration date of the capital lease agreement   April 2020        
Navios Logistics | Ferni H and San San H            
Property Plant And Equipment [Line Items]            
Repayments of obligations under capital leases   $ 2,094 $ 710      
Navios Logistics | Expansion of its dry port            
Property Plant And Equipment [Line Items]            
Payments for construction in progress   76,153   29,484    
Navios Logistics | Three new pushboats, price per each            
Property Plant And Equipment [Line Items]            
Total purchase price         $ 7,344  
Payments for construction in progress   $ 15,516   $ 14,770    
Date of expected delivery   Q1 2017