Transactions with Related Parties (Details)
€ in Thousands, $ in Thousands
3 Months Ended 5 Months Ended 6 Months Ended 10 Months Ended
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
May. 31, 2015
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2015
EUR (€)
Jun. 30, 2014
USD ($)
Nov. 11, 2014
USD ($)
Feb. 18, 2015
Dec. 31, 2014
USD ($)
Oct. 09, 2013
Dec. 31, 2012
USD ($)
Annual lease payments of office       $ 1,052 € 943            
Due from affiliate, total $ 17,119     17,119         $ 33,400    
Due from affiliate, current 17,799     17,799         27,196    
Due from affiliate companies, non-current 0     0         9,625    
Due to affiliate companies, current 3,930     3,930         0    
Deferred gain recognized in Statement of Comprehensive Income 17,968 $ 7,079   31,880   $ 29,497          
Amount outstanding 238,134     238,134         269,123    
Loan receivable from affiliate companies 11,464     11,464         7,791    
Long-term debt 1,584,023 1,624,712   1,584,023   1,624,712          
Navios Partners Agreement                      
Maximum payout of company under Navios Partner's guarantee                     $ 20,000
Amount of future charter payments covered by guarantee 0     0              
General and administrative fees 1,505 1,500   3,105   2,986          
Navios Acquisition Agreement                      
General and administrative fees 1,935 1,803   $ 3,861   3,498          
Navios Logistics Agreement                      
Administrative services agreement duration       5 5            
General and administrative fees 190 190   $ 380   380          
Navios Europe I Agreement                      
Administrative services agreement duration       6 6            
General and administrative fees 201 201   $ 397   397          
Navios Midstream Agreement                      
Administrative services agreement duration       5 5            
General and administrative fees 214 0   $ 414   0          
Navios Europe II Agreement                      
Administrative services agreement duration       6 6            
General and administrative fees 27 0   $ 27   0          
Acropolis                      
Commisions paid 2 0   6   0          
Trade accounts payable 81     81         78    
Dividends received 0 271   0   271          
Navios Partners                      
Due from affiliate, current 16,169     16,169         1,575    
Unamortized deferred gain for vessels and rights sold 14,831     14,831         16,301    
Deferred gain recognized in Statement of Comprehensive Income 735 735   $ 1,470   3,808          
Face amount of credit facility     $ 60,000                
Maximum borrowing capacity     $ 60,000                
Interest rate description       LIBOR LIBOR            
Interest rate percentage     3.00%                
Amount outstanding 0     $ 0              
Debt instrument maturity date       Jan. 02, 2017 Jan. 02, 2017            
Available amount of loan facility $ 60,000     $ 60,000              
Ownership percentage 20.10%     20.10%              
Navios Acquisition                      
Due from affiliate, current $ 950     $ 950         22,138    
Due from affiliate companies, non-current 0     0         9,625    
Face amount of credit facility 40,000     40,000              
Maximum borrowing capacity 40,000     $ 40,000     $ 200,000        
Interest rate description       LIBOR LIBOR            
Interest rate percentage       3.00% 3.00%   6.00%        
Arrangement fee             $ 4,000        
Credit facility outstanding amount 0     $ 0              
Debt instrument maturity date       Dec. 31, 2015 Dec. 31, 2015   Dec. 29, 2014        
Navios Midstream                      
Due from affiliate, current 0     $ 0         62    
Due to affiliate companies, current 3,799     $ 3,799         0    
Description of the option to acquire Navios Midstream       Navios Holdings entered into an option agreement, with Navios Acquisition under which Navios Acquisition, which owns and controls Navios Midstream GP LLC, granted Navios Holdings the option to acquire a minimum of 25% of the outstanding membership interests in Navios Maritime Midstream GP LLC and the incentive distribution rights in Navios Midstream representing the right to receive an increasing percentage of the quarterly distributions when certain conditions are met. The option shall expire on November 18, 2024. The purchase price for the acquisition for all or part of the option interest shall be an amount equal to its fair market value. As of June 30, 2015, Navios Holdings had not exercised any part of that option. Navios Holdings entered into an option agreement, with Navios Acquisition under which Navios Acquisition, which owns and controls Navios Midstream GP LLC, granted Navios Holdings the option to acquire a minimum of 25% of the outstanding membership interests in Navios Maritime Midstream GP LLC and the incentive distribution rights in Navios Midstream representing the right to receive an increasing percentage of the quarterly distributions when certain conditions are met. The option shall expire on November 18, 2024. The purchase price for the acquisition for all or part of the option interest shall be an amount equal to its fair market value. As of June 30, 2015, Navios Holdings had not exercised any part of that option.            
Navios Europe I                      
Due from affiliate, total 886     $ 886         4,087    
Due from affiliate, current                 3,421    
Due from affiliate companies, non-current 1,017     1,017         666    
Due to affiliate companies, current 131     131              
Deferred gain recognized in Statement of Comprehensive Income 399 $ 311   $ 560   $ 462          
Ownership percentage                   47.50%  
Navios Europe I | Navios Revolving Loans                      
Interest rate percentage       1.27% 1.27%            
Available amount of loan facility 4,323     $ 4,323              
Loan receivable from affiliate companies 7,125     7,125         7,125    
Navios Europe I | Navios Holdings, Acquisition, Partners | Navios Revolving Loans                      
Available amount of loan facility 9,100     9,100              
Navios Europe II                      
Due from affiliate, total 712     712         0    
Due from affiliate, current 680     680         0    
Due from affiliate companies, non-current 33     33         0    
Deferred gain recognized in Statement of Comprehensive Income 33     $ 33              
Ownership percentage               47.50%      
Navios Europe II | Navios Revolving Loans                      
Interest rate percentage       1.80% 1.80%            
Available amount of loan facility 14,998     $ 14,998              
Loan receivable from affiliate companies 3,289     3,289         $ 0    
Navios Europe II | Navios Term Loans II                      
Available amount of loan facility 2,375     2,375              
Navios Europe II | Navios Holdings, Acquisition, Partners | Navios Revolving Loans                      
Available amount of loan facility 31,575     31,575              
Navios Europe II | Navios Holdings, Acquisition, Partners | Navios Term Loans II                      
Available amount of loan facility $ 5,000     $ 5,000