Borrowings - Loan Facilities Navios Holdings (Details)
$ in Thousands
 3 Months Ended 5 Months Ended 10 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
May 31, 2017
USD ($)
Nov. 03, 2017
USD ($)
Oct. 31, 2016
USD ($)
Oct. 31, 2010
USD ($)
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Sep. 30, 2010
Debt Instrument [Line Items]                    
Amount outstanding           $ 1,581,756 $ 1,843,912      
Gain/ (Loss) on bond and debt extinguishment           47,430 6,464 $ (981)    
(Repayment of)/proceeds from loan payable to affiliate company           (13,420) 0 (55,132)    
Proceeds from long-term loans           129,022 56,919 $ 125,495    
Accrued interest           35,926 40,903      
Navios Holdings                    
Debt Instrument [Line Items]                    
Amount outstanding           1,061,397 1,083,139      
Proceeds from long-term loans           4,000        
Navios Containers                    
Debt Instrument [Line Items]                    
Proceeds from long-term loans           $ 123,171        
2024 Notes                    
Debt Instrument [Line Items]                    
Redemption price percentage           100.00%        
Secured debt                    
Debt Instrument [Line Items]                    
Repayments Of Secured Debt           $ 59,194        
Two Navios Holdings' credit facilities                    
Debt Instrument [Line Items]                    
Repayments Of Secured Debt           $ 31,228        
NSM Loan                    
Debt Instrument [Line Items]                    
Issuance date/Date of agreement           Aug. 29, 2019        
Amount outstanding           $ 130,538 0      
Face amount at issuance date           141,795        
Repayment of loan payable to affiliate companies           13,420        
Accrued interest           2,163        
One Navios Logistics' credit facilities                    
Debt Instrument [Line Items]                    
Repayments Of Secured Debt           3,390        
Two Navios Containers' credit facilities                    
Debt Instrument [Line Items]                    
Repayments Of Secured Debt           $ 53,075        
Series H Depositary Shares | 2024 Notes                    
Debt Instrument [Line Items]                    
Issuance date/Date of agreement           Mar. 21, 2019        
Face amount at issuance date           $ 4,747        
Fixed interest rate           9.75%        
Number of shares repurchased | shares           10,930        
Series G Depositary Shares | 2024 Notes                    
Debt Instrument [Line Items]                    
Issuance date/Date of agreement           Apr. 21, 2019        
Face amount at issuance date           $ 3,879        
Fixed interest rate           9.75%        
Number of shares repurchased | shares           8,841        
Loan Facility Credit Agricole ($40,000) to partially finance the construction of one newbuilding Capesize vessel                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Sep. 30, 2010        
Maximum borrowing capacity           $ 40,000        
Number of vessels partially financed           1        
Interest rate description           LIBOR plus 275 basis points        
Loan margin percentage           2.75%        
Amount outstanding             0      
Maturity date           Aug. 31, 2021        
Loan Facility Credit Agricole ($23,000) to partially finance the construction of one Panamax vessel                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Aug. 31, 2011        
Maximum borrowing capacity           $ 23,000        
Number of vessels partially financed           1        
Interest rate description           LIBOR plus 275 basis points        
Loan margin percentage           2.75%        
Number of repayment installments           5        
Repayment frequency           semi-annual        
Repayment installment           $ 750        
Balloon payment on the last repayment date           8,850        
Amount outstanding           $ 12,600 12,031      
Loan Facility Credit Agricole ($23,000) to partially finance the construction of one newbuilding bulk carrier                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Dec. 31, 2011        
Maximum borrowing capacity           $ 23,000        
Number of vessels partially financed           1        
Interest rate description           LIBOR plus 325 basis points        
Loan margin percentage           3.25%        
Number of repayment installments           5        
Repayment frequency           semi-annual        
Repayment installment           $ 750        
Balloon payment on the last repayment date           9,150        
Amount outstanding           $ 12,900 12,350      
Loan Facility Credit Agricole ($22,500) to finance the acquisition of two Panamax Vessels                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Dec. 20, 2013        
Maximum borrowing capacity           $ 22,500        
Number of loan tranches           2        
Number of vessels financed           2        
Interest rate description           LIBOR plus 300 basis points        
Loan margin percentage           3.00%        
Amount outstanding             0      
Maturity date           Aug. 31, 2021        
Loan Facility Credit Agricole ($28,745) to repay all amounts outstanding under the facility agreement dated September 2010 and to repay all amounts outstanding under the facility agreement dated December 20, 2013                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Feb. 14, 2018        
Maximum borrowing capacity           $ 28,745        
Number of loan tranches           3        
Interest rate description           LIBOR plus 280 basis points        
Loan margin percentage           2.80%        
Amount outstanding           $ 0 26,415      
Loan Facility Credit Agricole ($28,745) to repay all amounts outstanding under the facility agreement dated September 2010 and to repay all amounts outstanding under the facility agreement dated December 20, 2013 | Tranche A                    
Debt Instrument [Line Items]                    
Amount drawn down             15,245      
Number of repayment installments           6        
Repayment frequency           semi-annual        
Repayment installment           $ 1,205        
Balloon payment on the last repayment date           $ 6,810        
Loan Facility Credit Agricole ($28,745) to repay all amounts outstanding under the facility agreement dated September 2010 and to repay all amounts outstanding under the facility agreement dated December 20, 2013 | Tranche B                    
Debt Instrument [Line Items]                    
Amount drawn down             6,750      
Number of repayment installments           6        
Repayment frequency           semi-annual        
Repayment installment           $ 563        
Balloon payment on the last repayment date           $ 2,813        
Loan Facility Credit Agricole ($28,745) to repay all amounts outstanding under the facility agreement dated September 2010 and to repay all amounts outstanding under the facility agreement dated December 20, 2013 | New Tranche June 2014                    
Debt Instrument [Line Items]                    
Amount drawn down             6,750      
Number of repayment installments           6        
Repayment frequency           semi-annual        
Repayment installment           $ 563        
Balloon payment on the last repayment date           $ 2,813        
Commerzbank A.G. to partially finance the acquisition of one Capesize vessel and the construction of three Capesize vessels                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Jun. 30, 2009        
Maximum borrowing capacity           $ 240,000        
Number of loan tranches           4        
Number of vessels financed           3        
Number of vessels partially financed           1        
Number of the cancellated tranches                   2
Commerzbank A.G. to partially finance the acquisition of one Capesize vessel and the construction of three Capesize vessels | Tranche A                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity           $ 60,000        
Repayment of debt         $ 53,600          
Commerzbank A.G. to partially finance the acquisition of one Capesize vessel and the construction of three Capesize vessels | Tranche B                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity           60,000        
Repayment of debt         $ 54,500          
Commerzbank A.G. to partially finance the acquisition of one Capesize vessel and the construction of three Capesize vessels | Tranche C                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity           60,000        
Amount outstanding       $ 15,319            
Repayment of debt       13,802            
Gain/ (Loss) on bond and debt extinguishment       $ 1,517            
Commerzbank A.G. to partially finance the acquisition of one Capesize vessel and the construction of three Capesize vessels | Tranche D                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity           $ 60,000        
Amount outstanding   $ 17,322                
Repayment of debt   15,607                
Gain/ (Loss) on bond and debt extinguishment   $ 1,715                
Hamburg Commercial Bank AG ($15,300) to partially refinance the 4th tranche of the Commerzbank facility                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           May 23, 2017        
Maximum borrowing capacity           $ 15,300        
Interest rate description           LIBOR plus 300 basis points        
Loan margin percentage           3.00%        
Number of repayment installments           7        
Repayment frequency           quarterly        
Repayment installment           $ 383        
Balloon payment on the last repayment date           8,798        
Amount outstanding           $ 11,475 13,005      
Loan Facility DVB Bank SE ($72,000)                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Mar. 23, 2012        
Maximum borrowing capacity           $ 42,000        
Number of loan tranches           2        
Interest rate description           LIBOR plus 293 basis points        
Loan margin percentage           2.93%        
Amount outstanding           $ 41,073 45,741      
Maturity date           Jun. 30, 2021        
Loan Facility DVB Bank SE ($72,000) | Tranche A                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity           $ 26,000        
Number of vessels financed           1        
Number of repayment installments           6        
Repayment frequency           quarterly        
Repayment installment           $ 363        
Balloon payment on the last repayment date           10,098        
Loan Facility DVB Bank SE ($72,000) | Tranche B                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity           $ 16,000        
Number of vessels financed           1        
Number of repayment installments           6        
Repayment frequency           quarterly        
Repayment installment           $ 268        
Balloon payment on the last repayment date           $ 3,968        
Loan Facility DVB Bank SE ($72,000) | New Tranche June 2014                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Jun. 27, 2014        
Maximum borrowing capacity           $ 30,000        
Number of vessels financed           1        
Number of repayment installments           6        
Repayment frequency           quarterly        
Repayment installment           $ 469        
Balloon payment on the last repayment date           $ 20,411        
Loan Facility DVB Bank SE ($40,000) to finance the acquisition of four Panamax vessels                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Sep. 30, 2013        
Maximum borrowing capacity           $ 40,000        
Number of vessels financed           4        
Interest rate description           LIBOR plus 325 basis points        
Loan margin percentage           3.25%        
Number of repayment installments           7        
Repayment frequency           quarterly        
Repayment installment           $ 444        
Balloon payment on the last repayment date           2,445        
Amount outstanding           $ 5,556 15,333      
Maturity date           Sep. 30, 2021        
Repayment of debt $ 5,556                  
Debt instrument collateral           1 newbuilding Panamax and 1 newbuilding Capesize vessel        
Loan Facility DVB Bank SE ($41,000) to finance the acquisition of one newbuilding Panamax vessel and one newbuilding Capesize vessel                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Jan. 31, 2016        
Maximum borrowing capacity           $ 41,000        
Number of loan tranches           2        
Number of vessels financed           2        
Interest rate description           LIBOR plus 255 basis points        
Loan margin percentage           2.55%        
Amount drawn down                 $ 39,900  
Repayment of debt             31,769      
Alpha Bank A.E. ($31,000) to finance part of the acquisition of a Capesize vessel                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Nov. 06, 2014        
Maximum borrowing capacity           $ 31,000        
Number of vessels partially financed           1        
Interest rate description           LIBOR plus 300 basis points        
Loan margin percentage           3.00%        
Number of repayment installments           12        
Repayment frequency           quarterly        
Repayment installment           $ 450        
Balloon payment on the last repayment date           16,600        
Amount outstanding           $ 22,000 23,800      
Alpha Bank A.E. ($16,125) to refinance one Capesize vessel                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Nov. 03, 2016        
Maximum borrowing capacity           $ 16,125        
Number of vessels financed           1        
Interest rate description           LIBOR plus 300 basis points        
Loan margin percentage           3.00%        
Number of repayment installments           12        
Repayment frequency           quarterly        
Repayment installment           $ 275        
Balloon payment on the last repayment date           10,725        
Amount outstanding           $ 14,025 $ 15,125      
Navios Acquisition Loan                    
Debt Instrument [Line Items]                    
Line of credit facility issuance date           Sep. 19, 2016        
Maximum borrowing capacity           $ 70,000        
(Repayment of)/proceeds from loan payable to affiliate company     $ (55,132)           $ 50,000  
Accrued interest     $ 5,132