Vessels, Port Terminals and Other Fixed Assets, Net - Navios Logistics (Details) - USD ($)
$ in Thousands
5 Months Ended 12 Months Ended
May 18, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Sep. 04, 2017
Feb. 28, 2017
Property Plant And Equipment [Line Items]            
Vessels, port terminals and other fixed assets, net   $ 1,898,455 $ 1,809,225      
Payments for construction in process   12,572 36,589 $ 86,911    
Prepaid expenses and other current assets   40,190 27,383      
Other long term assets   23,736 4,856      
Gain on sale of assets   894 1,064 0    
Cash consideration for purchase of property, plant and equipment   46,395 0 $ 60,115    
River and estuary tanker            
Property Plant And Equipment [Line Items]            
Vessels, port terminals and other fixed assets, net   17,389        
Capitalized interest costs   628        
Payments for construction in process     6,141      
Three new pushboats            
Property Plant And Equipment [Line Items]            
Vessels, port terminals and other fixed assets, net   32,032        
Capitalized interest costs   $ 3,874        
Payments for construction in process     30,708      
Expansion of its dry port            
Property Plant And Equipment [Line Items]            
Vessels, port terminals and other fixed assets, net     137,357      
Capitalized interest costs     9,971      
Undeveloped land located in Port Murtinho region, Brazil            
Property Plant And Equipment [Line Items]            
Area of land (in hectares)   3,5 hectares        
Payments to acquire land   $ 1,097        
Covers for Dry Barges            
Property Plant And Equipment [Line Items]            
Total purchase price         $ 1,115  
Payments for construction in process     629      
Cash consideration for purchase of property, plant and equipment   $ 1,115        
Ferni H            
Property Plant And Equipment [Line Items]            
Vessel Capacity   16,871 dwt        
San San H            
Property Plant And Equipment [Line Items]            
Vessel Capacity   16,871 dwt        
Ferni H and San San H            
Property Plant And Equipment [Line Items]            
Vessel acquisition cost $ 11,239          
Formosa and San Lorenzo            
Property Plant And Equipment [Line Items]            
Vessel sale price           $ 1,109
Prepaid expenses and other current assets   $ 174 318      
Other long term assets   $ 428 500      
Gain on sale of assets     $ 1,075