Transactions with Related Parties - Additional Information (Details) - USD ($)
$ in Thousands
2 Months Ended 3 Months Ended 4 Months Ended 10 Months Ended 11 Months Ended 12 Months Ended
Feb. 21, 2018
Mar. 20, 2017
Mar. 17, 2017
Apr. 30, 2016
Nov. 11, 2014
Nov. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 20, 2018
Sep. 19, 2016
Feb. 04, 2015
Due to affiliate, current             $ 37,063 $ 16,749        
Due to affiliate, non current             67,154 76,872        
Deferred gain recognized in Statement of Comprehensive Income             (80,205) 4,399 $ (202,779)      
Loan receivable from affiliate companies             $ 46,089 30,112        
Navios Partners                        
Termination date of the administrative services agreement             December 31, 2022          
Due to affiliate, current             $ 34,765 8,315        
Due to affiliate, non current             17,891 14,891        
Unamortized deferred gain for vessels and rights sold             8,126 9,955        
Deferred gain recognized in Statement of Comprehensive Income             $ 1,828 1,892 1,833      
Line of credit facility issuance date             May 31, 2015          
Maximum borrowing capacity             $ 60,000          
Credit facility outstanding amount             $ 0 0        
Interest rate description             LIBOR plus 300 basis points          
Loan margin percentage             3.00%          
Credit facility maturity date             Jan. 02, 2017          
Amount drawn down       $ 21,000                
Number of shares issued-common stock 18,422,000 47,795,000                    
Navios Acquisition                        
Termination date of the administrative services agreement             May 2020          
Due from affiliate             $ 11,941          
Due to affiliate               2,800        
Due to affiliate, non current             11,282 15,236        
Line Credit Facility Arrangement Fees         $ 4,000              
Credit facility outstanding amount             $ 0 0        
Interest rate description             LIBOR plus 300 basis points          
Credit facility maturity date             Dec. 31, 2015          
Navios Midstream                        
Due to affiliate, current             $ 1,828 990        
Due to affiliate, non current             $ 2,565 4,554        
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, 2018, Navios Holdings had not exercised any part of that option.          
Navios Containers                        
Due to affiliate, current               3,334        
Due to affiliate, non current               7,965        
Deferred gain recognized in Statement of Comprehensive Income           $ 417   161        
Navios Acquisition Loan                        
Line of credit facility issuance date             Sep. 19, 2016          
Maximum borrowing capacity             $ 70,000          
Line Credit Facility Arrangement Fees             700          
Navios Acquisition Loan | Navios Logistics                        
Ownership percentage of Navios Holdings                     78.50%  
Navios Revolving Loans I Transfer                        
Due to affiliate, non current             35,417 34,227        
Consideration received     $ 33,473                  
Debt instrument unamortized premium     12,089       $ 8,359 10,390        
Navios Revolving Loans I Transfer | Navios Partners                        
Loan receivable from affiliate companies     21,384                  
Long-term liability recognized     33,473                  
Proceeds from transfer of debt     $ 4,050                  
Number of shares issued-common stock     13,076,923                  
Consideration equity component     $ 29,423                  
Share Repurchase Program                        
General partnership interests                   1,747,206    
Minimum | Navios Midstream                        
Ownership percentage of Navios Holdings             25.00%          
Minimum | Share purchase agreement with Navios Partners                        
Ownership percentage of Navios Holdings                       20.00%
Navios Holdings debt | Navios Acquisition                        
Maximum borrowing capacity         $ 200,000              
Loan margin percentage         6.00%              
Navios Partners                        
Deferred gain recognized in Statement of Comprehensive Income             $ 16,171 12,570 (5,979)      
Ownership percentage of Navios Holdings             20.00%          
Navios Europe I                        
Due from affiliate             $ 12,013 7,176        
Due to affiliate, current             7,769 4,002        
Due to affiliate, non current             $ 4,244 3,174        
Ownership percentage of Navios Holdings             47.50%          
Navios Europe I | Navios Revolving Loans I                        
Preferred Distribution Percentage             12.70%          
Loan receivable from affiliate companies             $ 19,125 11,125        
Available amount of loan facility             12,000          
Payments to fund loans             8,000          
Navios Europe I | Navios Revolving Loans I | Maximum | Funding Commitment                        
Available amount of loan facility             12,000          
Navios Europe II                        
Due from affiliate             5,312 2,440        
Due to affiliate, current             470 1,310        
Due to affiliate, non current             $ 5,782 3,750        
Ownership percentage of Navios Holdings             47.50%          
Navios Europe II | Navios Revolving Loans II                        
Preferred Distribution Percentage             18.00%          
Loan receivable from affiliate companies             $ 16,938 12,063        
Available amount of loan facility             4,503          
Payments to fund loans             4,875          
Navios Europe II | Navios Revolving Loans II | Maximum | Funding Commitment                        
Available amount of loan facility             4,503          
Navios Acquisition                        
Deferred gain recognized in Statement of Comprehensive Income             $ (43,378) $ (9,875) $ 29,801      
Ownership percentage of Navios Holdings             35.80%