Borrowings - Senior and Ship Mortgage Notes Navios Holdings and Navios Logistics (Details)
€ in Thousands, $ in Thousands
4 Months Ended 8 Months Ended 11 Months Ended 12 Months Ended
Apr. 30, 2021
Aug. 26, 2019
USD ($)
Aug. 26, 2019
EUR (€)
Nov. 29, 2013
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Jan. 31, 2021
USD ($)
Dec. 31, 2020
EUR (€)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Debt Instrument [Line Items]                            
Redemption price percentage         110.75%                  
Gain/ (Loss) on bond and debt extinguishment         $ 7,047 $ 47,430 $ 6,464              
Restricted cash         16,303 736                
Amount outstanding         1,612,718 1,581,756                
Accrued interest         55,650 35,926                
Proceeds from long-term loans         81,625 129,022 56,919              
Proceeds from issuance of senior notes, net of deferred financing costs         487,504 0 0              
Senior Notes         $ 1,263,566 1,170,679                
2022 Senior Secured Notes                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         Nov. 21, 2017                  
Face amount at issuance date         $ 305,000                  
Debt instrument, issuance price percentage         97.00%                  
2022 Senior Secured Notes | Upon occurrence of certain change of control events                            
Debt Instrument [Line Items]                            
Redemption price percentage         101.00%                  
2022 Notes                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         Nov. 29, 2013                  
Face amount at issuance date         $ 650,000                  
Fixed interest rate         7.375%       7.375%          
Maturity date         Jan. 31, 2022                  
Repurchase of notes         $ 20,782 81,235 35,661              
Repurchase of senior notes - cash consideration         9,443 50,683 28,796              
Gain/ (Loss) on bond and debt extinguishment         11,204 47,430 $ 6,464              
Restricted cash         15,609     $ 14,250   $ 15,251 $ 358 $ 10,129 $ 7,410 $ 14,000
Debt Instrument Collateral 17 drybulk vessels     23 drybulk vessels                    
Senior Notes         $ 476,822 497,604                
2022 Notes | Upon occurrence of certain change of control events                            
Debt Instrument [Line Items]                            
Redemption price percentage         101.00%                  
2022 Logistics Senior Notes | Navios Logistics                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         Apr. 22, 2014                  
Face amount at issuance date         $ 375,000                  
Fixed interest rate         7.25%       7.25%          
Redemption price percentage         100.00%                  
Maturity date         May 01, 2022                  
Repurchase of notes           35,500                
Repurchase of senior notes - cash consideration           17,642                
Gain/ (Loss) on bond and debt extinguishment         $ (2,661)                  
Repayment of debt         375,000                  
Senior Notes         $ 0 375,000                
Debt Instrument, Redemption Period End Date         Jul. 16, 2020                  
2025 Notes | Navios Logistics                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         Jul. 08, 2020                  
Face amount at issuance date         $ 500,000                  
Fixed interest rate         10.75%       10.75%          
Debt finance costs         $ 19,414                  
Maturity date         Jul. 01, 2025                  
Proceeds from issuance of senior notes, net of deferred financing costs         $ 487,504                  
Senior Notes         500,000 0                
Interest Expense Debt         $ 25,979                  
2025 Notes | Navios Logistics | On or after August 1, 2022                            
Debt Instrument [Line Items]                            
Percentage of principal amount redeemed         35.00%                  
2025 Notes | Navios Logistics | Prior to August 1, 2022                            
Debt Instrument [Line Items]                            
Percentage of principal amount redeemed         100.00%                  
2025 Notes | Navios Logistics | Upon occurrence of certain change of control events                            
Debt Instrument [Line Items]                            
Percentage of principal amount redeemed         100.00%                  
Navios Logistics BBVA Loan Facility | Navios Logistics                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         Dec. 15, 2016                  
Face amount at issuance date         $ 25,000                  
Loan margin percentage         3.25%                  
Interest rate         LIBOR (180 days) plus 325 basis points                  
Number of repayment installments         20                  
Repayment frequency         quarterly                  
Amount outstanding         $ 0 14,275                
Navios Logistics New BBVA Loan Facility | Navios Logistics                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         Feb. 28, 2020                  
Face amount at issuance date         $ 25,000                  
Loan margin percentage         3.25%                  
Interest rate         LIBOR (180 days) plus 325 basis points                  
Maturity date         Mar. 31, 2022                  
Repayment frequency         quarterly                  
Amount outstanding         $ 22,000                  
Proceeds from Debt, Net of Issuance Costs         $ 13,625                  
Navios Logistics Alpha Bank Loan | Navios Logistics                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         May 18, 2017                  
Face amount at issuance date         $ 14,000                  
Number of vessels financed         2       2          
Loan margin percentage         3.15%                  
Interest rate         LIBOR (90 days) plus 315 basis points                  
Number of repayment installments         20                  
Repayment frequency         quarterly                  
Amount outstanding         $ 9,100 10,500                
Balloon payment on the last repayment date         $ 7,000                  
Navios Logistics Credit agreement | Navios Logistics                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         Aug. 17, 2018                  
Face amount at issuance date         $ 7,615       € 6,200          
Fixed interest rate         6.75%       6.75%          
Maturity date         Aug. 17, 2020                  
Number of repayment installments         24                  
Repayment frequency         monthly                  
Repayment of debt   $ 3,808 € 3,100   $ 38,556                  
Navios Logistics Term Loan B Facility | Navios Logistics                            
Debt Instrument [Line Items]                            
Issuance date/Date of agreement         Nov. 03, 2017                  
Face amount at issuance date         $ 100,000                  
Loan margin percentage         4.75%                  
Interest rate         LIBOR plus 475 basis points                  
Gain/ (Loss) on bond and debt extinguishment         $ (1,496)                  
Duration of loan         4 years                  
Debt amortization percentage         1.00%                  
Amount outstanding         $ 0 98,000                
Repayment of debt         97,500                  
Navios Logistics Notes Payable | Navios Logistics                            
Debt Instrument [Line Items]                            
Line of credit facility maximum borrowing capacity         41,964                  
Debt finance costs         $ 5,949                  
Interest rate         six-month LIBOR                  
Number of repayment installments         16                  
Repayment frequency         semi-annual                  
Amount outstanding         $ 17,842 22,469                
Other long-term loans | Navios Logistics                            
Debt Instrument [Line Items]                            
Line of credit facility issuance date         Oct. 29, 2009                  
Fixed interest rate         6.00%       6.00%          
Line of credit facility maximum borrowing capacity         $ 817                  
Repayment frequency         monthly                  
Amount outstanding         $ 46 $ 115                
Repayment installment         $ 6