Transactions with Related Parties (Details)
€ in Thousands, $ in Thousands
 3 Months Ended 4 Months Ended 5 Months Ended 9 Months Ended 10 Months Ended 11 Months Ended 12 Months Ended
Mar. 31, 2017
USD ($)
Apr. 30, 2016
Jun. 05, 2015
May 31, 2015
USD ($)
Sep. 19, 2016
USD ($)
Nov. 11, 2014
USD ($)
Nov. 18, 2014
Dec. 13, 2013
Dec. 31, 2016
USD ($)
Dec. 31, 2016
EUR (€)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2010
USD ($)
Mar. 23, 2017
shares
Feb. 04, 2015
Dec. 18, 2013
USD ($)
Dec. 31, 2012
USD ($)
Annual lease payments of office                 $ 2,748   $ 2,508 $ 2,804          
General and administrative expenses                 25,295   34,183 45,590          
Due from affiliate, total                 0   8,887            
Due from affiliate, current                 8,548   12,669            
Long-term receivable from affiliate companies                 11,105   0            
Due to affiliate, current                 32,847   17,791            
Due to affiliate                 32,847   17,791            
Due to affiliate, non current                 6,399   0            
Deferred gain recognized in Statement of Comprehensive Income                 (202,779)   61,484 57,751          
Fair value of the claim, recorded as ''Other expense''                 11,665   34,982 24,520          
Long-term debt                 1,651,095   1,581,308 1,612,890          
Investments in affiliates                 160,071   381,746 344,453          
Loan receivable from affiliate companies                 23,008   16,474            
Proceeds from loan payable to affiliate company                 50,000   0 0          
Accrued interest on loan payable to affiliate company                 1,240   0 0          
Outstanding balance                 49,876   0            
Navios Acquisition Loan                                  
Line Credit Facility Arrangement Fees         $ 700                        
Credit facility outstanding amount                 51,240                
Fixed interest rate         8.75%                        
Available amount of loan facility         $ 70,000                        
Proceeds from loan payable to affiliate company                 50,000                
Accrued interest on loan payable to affiliate company                 1,240                
Unamortized balance of deferred fees                 1,364                
Outstanding balance                 49,876                
Navios Partners Agreement                                  
Maximum payout of company under Navios Partner's guarantee                                 $ 20,000
General and administrative expenses                 7,751   6,205 6,090          
Navios Acquisition Agreement                                  
General and administrative expenses                 9,427   7,608 7,314          
Navios Logistics Agreement                                  
General and administrative expenses                 1,000   760 760          
Termination date of the administrative services agreement   December 2021                              
Navios Europe I Agreement                                  
General and administrative expenses                 1,300   800 800          
Administrative services agreement term in years               6 years                  
Navios Midstream Agreement                                  
General and administrative expenses                 1,500   1,014 96          
Administrative services agreement term in years             5 years                    
Navios Europe II Agreement                                  
General and administrative expenses                 1,820   550            
Administrative services agreement term in years     6 years                            
Goldland Anonymos Eteria                                  
Annual lease payments of office                 1,044 € 943              
Acropolis                                  
Commissions paid                 0   6 2          
Trade accounts payable                 $ 76   76            
Navios Partners                                  
Termination date of the administrative services agreement                 December 2017 December 2017              
Due from affiliate, total                 $ 0   8,887            
Long-term receivable from affiliate companies                 11,105                
Unamortized deferred gain for vessels and rights sold                 11,846   13,680            
Deferred gain recognized in Statement of Comprehensive Income                 1,833   2,621 5,278          
Maximum borrowing capacity       $ 60,000                          
Credit facility outstanding amount                 0                
Fair value of the claim, recorded as ''Other expense''                 $ 19,739                
Interest rate description       LIBOR plus 300 basis points                          
Loan margin percentage       3.00%                          
Credit facility maturity date       Jan. 02, 2017                          
Loan receivable from affiliate companies                     0            
Navios Acquisition                                  
Termination date of the administrative services agreement                 May 2020 May 2020              
Long-term receivable from affiliate companies                 $ 0                
Line Credit Facility Arrangement Fees           $ 4,000                      
Credit facility outstanding amount                 $ 0   $ 0            
Interest rate description                 LIBOR plus 300 basis points LIBOR plus 300 basis points              
Credit facility maturity date                 Dec. 31, 2015 Dec. 31, 2015 Dec. 29, 2014            
Navios Midstream                                  
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 Maritime Midstream Partners GP LLC ("Midstream General Partner"), granted Navios Holdings the option to acquire a minimum of 25% of the outstanding membership interests in Midstream General Partner 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 December 31, 2016, 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 Maritime Midstream Partners GP LLC ("Midstream General Partner"), granted Navios Holdings the option to acquire a minimum of 25% of the outstanding membership interests in Midstream General Partner 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 December 31, 2016, Navios Holdings had not exercised any part of that option.              
Navios Logistics | Navios Acquisition Loan                                  
Ownership percentage of Navios Holdings         78.50%                        
Minimum | Share purchase agreement with Navios Partners                                  
Ownership percentage of Navios Holdings                             20.00%    
Minimum | Navios Midstream                                  
Option agreement percentage interests                 25.00% 25.00%              
Short Term debt | Navios Acquisition                                  
Maximum borrowing capacity                         $ 40,000        
Loan margin percentage                         3.00%        
Navios Holdings debt | Navios Acquisition                                  
Maximum borrowing capacity           $ 200,000                      
Loan margin percentage           6.00%                      
Navios Europe I                                  
Deferred gain recognized in Statement of Comprehensive Income                 $ 1,303   $ 1,293 831          
Investments in affiliates                 5,967   5,497         $ 4,750  
Navios Europe I | Navios Revolving Loans I                                  
Loan receivable from affiliate companies                 10,070   8,868            
Navios Europe I | Navios Revolving Loans I | Navios Holdings, Navios Acquisition and Navios Partners                                  
Maximum borrowing capacity                               $ 24,100  
Navios Europe II                                  
Deferred gain recognized in Statement of Comprehensive Income                 (14)   1,308            
Investments in affiliates                 5,894   6,650            
Navios Europe II | Navios Revolving Loans II                                  
Loan receivable from affiliate companies                 14,343   7,900            
Navios Europe II | Navios Revolving Loans II | Navios Holdings, Navios Acquisition and Navios Partners                                  
Maximum borrowing capacity                     43,500            
Navios Partners                                  
Deferred gain recognized in Statement of Comprehensive Income                 $ 5,979   15,462 36,959          
Ownership percentage of Navios Holdings                 20.00%                
Investments in affiliates                 $ 24,033   115,432            
Navios Europe I                                  
Due from affiliate, total                 2,376   1,609            
Due from affiliate, current                 145   211            
Long-term receivable from affiliate companies                 $ 2,231   1,398            
Ownership percentage of Navios Holdings                 47.50%                
Navios Europe I | Navios Revolving Loans I                                  
Preferred Distribution Percentage                 12.70% 12.70%              
Loan receivable from affiliate companies                 $ 7,125   7,125            
Navios Europe I | Navios Revolving Loans I | Navios Holdings, Navios Acquisition and Navios Partners                                  
Available amount of loan facility                 9,100                
Navios Europe II                                  
Due from affiliate, total                 10,453   4,196            
Due from affiliate, current                 8,402   3,571            
Long-term receivable from affiliate companies                 $ 2,051   625            
Ownership percentage of Navios Holdings                 47.50%                
Navios Europe II | Navios Revolving Loans II                                  
Loan receivable from affiliate companies                 $ 11,602   7,327            
Navios Europe II | Navios Revolving Loans II | Navios Holdings, Navios Acquisition and Navios Partners                                  
Available amount of loan facility                 19,075                
Navios Acquisition                                  
Due from affiliate, current                 0   0            
Deferred gain recognized in Statement of Comprehensive Income                 $ 29,801   43,299 $ 19,513          
Ownership percentage of Navios Holdings                 46.10%                
Investments in affiliates                 $ 124,062   253,286            
Navios Midstream                                  
Due from affiliate, current                 $ 0   $ 0            
Ownership percentage of Navios Holdings                 0.00%                
Funding Commitment | Navios Europe I | Navios Revolving Loans I                                  
Available amount of loan facility                 $ 4,323                
Funding Commitment | Navios Europe II | Navios Revolving Loans II                                  
Available amount of loan facility                 $ 9,061                
Subsequent event | Share Repurchase Program                                  
General partnership interests | shares                           1,271,766      
Subsequent event | Navios Europe II | Navios Revolving Loans II | Navios Holdings, Navios Acquisition and Navios Partners                                  
Line of Credit Facility, Increase $ 14,000