Consolidation of Navios Containers (Details) - USD ($)
$ / shares in Units, $ in Thousands
11 Months Ended 12 Months Ended
Nov. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Subsidiary or Equity Method Investee [Line Items]      
Common stock shares outstanding   12,843,414 12,038,647
Pro forma revenues   $ 639,607 $ 502,237
Pro forma net income/(loss)   $ (313,971) $ (107,210)
Navios Containers      
Subsidiary or Equity Method Investee [Line Items]      
Date of conversion into a limited partnership   Nov. 30, 2018  
Common stock shares outstanding 34,603,100    
Closing price of the common stock $ 4.96    
Ownership by Noncontrolling interest 96.30%    
Cash and restricted cash $ 24,400    
Carrying value of Navios Holdings' interest 6,078    
Gain on obtaining control $ 191    
Navios Containers | Minimum      
Subsidiary or Equity Method Investee [Line Items]      
Percentage of outstanding common units holders’ vote required to remove the general partner   75.00%  
Navios Containers      
Subsidiary or Equity Method Investee [Line Items]      
Interest percentage of Navios Holdings 3.70%    
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual   $ 12,053  
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual   $ 752