Transactions with Related Parties - Additional Information (Details) - USD ($)
$ in Thousands
2 Months Ended 3 Months Ended 6 Months Ended 7 Months Ended 12 Months Ended
Mar. 03, 2020
Mar. 31, 2017
Jul. 10, 2020
Jun. 30, 2020
Jul. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2016
Sep. 30, 2020
Jan. 01, 2020
Feb. 01, 2019
Proceeds From Related Party Debt           $ 50,000 $ 0 $ 0        
Due from affiliate, current           243 14,614          
Due from affiliate, non current           0 5,328          
Due to affiliate, current           27,114 6,353          
Due to affiliate           129,227 130,538          
Due to affiliate, non current           0 5,000          
Deferred gain recognized in Statement of Comprehensive Income           (1,293) (9,185) (80,205)        
Loan receivable from affiliate companies           0 24,495          
Current portion of long-term debt           374,191 50,110          
Accrued interest           55,650 35,926          
Repayment of loans payable to affiliate companies           (50,000) (13,420) 0        
Current portion of loans payable to affiliate companies           26,595 24,715          
Outstanding balance           1,612,718 1,581,756          
Impairment of loan receivable from affiliate company           6,050 0 0        
Dividends declared           12,256            
Net liabilities included in sale price           $ 4,378 0 0        
Navios Gem                        
Year Built           2014            
Vessel Capacity           181,336 dwt            
Navios Victory                        
Year Built           2014            
Vessel Capacity           77,095 dwt            
Navios Victory and Navios Gem                        
Vessel sale price                   $ 51,000    
Net liabilities included in sale price           $ 4,378            
Navios Partners                        
Due to affiliate           5,000 5,000          
Due to affiliate, non current           0 5,000          
Unamortized deferred gain for vessels and rights sold                     $ 6,285  
Deferred gain recognized in Statement of Comprehensive Income           0 1,842 1,828        
Navios Acquisition                        
Due from affiliate, current           $ 243 1,460          
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, 2020, Navios Holdings had not exercised any part of that option.            
NSM                        
Due from affiliate, non current           $ 0 5,328          
Due to affiliate, current           $ 22,114 1,353          
Share Repurchase Program                        
General partnership interests                       1,754,981
Minimum | Navios Midstream                        
Ownership percentage of Navios Holdings           20.00%            
Navios Revolving Loans II | Navios Europe II                        
Revolving loan facility maximum borrowing capacity                 $ 43,500      
Line of Credit Facility, Increase   $ 14,000                    
Secured Credit Facility | Navios Logistics                        
Line of credit facility issuance date           Apr. 25, 2019            
Maximum borrowing capacity           $ 50,000            
Line Credit Facility Arrangement Fees           $ 500            
Debt instrument maturity date           Dec. 31, 2024            
Amount drawn down           $ 70,000            
Line of Credit Facility, Increase           $ 20,000            
Conversion of unpaid dividend of preferred stock to common stock     2,414,263                  
Dividends declared     $ 2,308                  
Secured Credit Facility | Navios Logistics | First year                        
Interest rate description           12.75%            
Secured Credit Facility | Navios Logistics | Second year                        
Interest rate description           14.75%            
Secured Credit Facility | Navios Logistics | If certain conditions are met                        
Interest rate description           10.00%            
Secured Credit Facility | NSM                        
Face amount at issuance date           $ 141,795            
Issuance date/Date of agreement           Aug. 29, 2019            
Fixed interest rate           5.00%            
Long-term debt term           5 years            
Current portion of long-term debt           $ 47,000            
Accrued interest           526 2,163          
Repayment of loan payable to affiliate companies       $ 31,500 $ 18,500 13,420            
Current portion of loans payable to affiliate companies           $ 10,328 22,552          
Repayment frequency           quarterly            
Outstanding balance           $ 78,375 128,375          
Secured Credit Facility | NSM | Deferred principal payment | First or second year                        
Fixed interest rate           7.00%            
Outstanding balance           $ 20,000            
Secured Credit Facility | NSM | Deferred principal payment | Third year                        
Fixed interest rate           7.00%            
Outstanding balance           $ 10,000            
2022 Notes                        
Face amount at issuance date           $ 650,000            
Issuance date/Date of agreement           Nov. 29, 2013            
Debt instrument maturity date           Jan. 31, 2022            
Fixed interest rate           7.375%            
Extinguishment Of Debt Amount           $ 20,782 81,235 $ 35,661        
2022 Notes | Secured Credit Facility | Navios Logistics                        
Extinguishment Of Debt Amount $ 18,726                      
2022 Senior Secured Notes                        
Face amount at issuance date           $ 305,000            
Issuance date/Date of agreement           Nov. 21, 2017            
$50.0 million NSM Loan                        
Face amount at issuance date           $ 50,000            
Issuance date/Date of agreement           Jun. 30, 2020            
Credit facility outstanding amount           $ 50,326 0          
Accrued interest           $ 326            
$50.0 million NSM Loan | Secured Credit Facility                        
Issuance date/Date of agreement           Jun. 30, 2020            
Maximum borrowing capacity           $ 50,000            
Fixed interest rate           5.00%            
Interest rate for deferred principal amounts           7.00%            
Accrued interest           $ 326 0          
Current portion of loans payable to affiliate companies           $ 16,226            
Repayment frequency           quarterly            
Outstanding balance           $ 50,000 0          
Navios Europe I                        
Proceeds From Related Party Debt             13,420          
Due from affiliate           0 $ 0          
Ownership percentage of Navios Holdings             47.50%          
Navios Europe I | Navios Revolving Loans I                        
Preferred Distribution Percentage             12.70%          
Navios Europe II                        
Due from affiliate           $ 0 $ 20,712          
Due from affiliate, current             13,154          
Due from affiliate, non current             7,558          
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