Borrowings - Navios Containers Debt (Details)
$ in Thousands
 4 Months Ended 6 Months Ended 8 Months Ended 9 Months Ended 12 Months Ended
Nov. 09, 2018
USD ($)
Jul. 02, 2018
USD ($)
Sep. 07, 2018
USD ($)
Sep. 30, 2017
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]              
Loan's discount         $ 18,509 $ 27,905  
Navios Containers | ABN AMRO Bank N.V. ($71,000) | Initial Facility              
Debt Instrument [Line Items]              
Line of credit facility issuance date         Jul. 27, 2017    
Line of credit facility maximum borrowing capacity         $ 21,000    
Number of vessels financed         7    
Interest rate description         LIBOR plus 400 basis points    
Loan margin percentage         4.00%    
Amount drawn down       $ 21,000      
Amount outstanding           0  
Navios Containers | ABN AMRO Bank N.V. ($71,000) | Facility Extension              
Debt Instrument [Line Items]              
Line of credit facility issuance date         Dec. 01, 2017    
Line of credit facility maximum borrowing capacity         $ 50,000    
Number of vessels financed         4    
Interest rate description         LIBOR plus 400 basis points    
Loan margin percentage         4.00%    
Amount drawn down             $ 50,000
Navios Containers | ABN AMRO Bank N.V. ($50,000)              
Debt Instrument [Line Items]              
Line of credit facility issuance date         Dec. 03, 2018    
Line of credit facility maximum borrowing capacity         $ 50,000    
Number of loan tranches         2    
Interest rate description         LIBOR plus 350 basis points    
Loan margin percentage         3.50%    
Amount drawn down           50,000  
Loan's discount           500  
Amount outstanding         $ 0 50,000  
Number of repayment installments         16    
Repayment frequency         quarterly    
Balloon payment on the last repayment date         $ 12,475    
Expiration date         Dec. 31, 2022    
Navios Containers | ABN AMRO Bank N.V. ($50,000) | Tranche A              
Debt Instrument [Line Items]              
Line of credit facility maximum borrowing capacity         $ 41,200    
Number of vessels financed         4    
Number of vessels partially financed         1    
Navios Containers | ABN AMRO Bank N.V. ($50,000) | Tranche B              
Debt Instrument [Line Items]              
Line of credit facility maximum borrowing capacity         $ 8,800    
Number of vessels partially financed         1    
Navios Containers | ABN AMRO Bank N.V. ($50,000) | First Four Installments              
Debt Instrument [Line Items]              
Repayment installment         $ 4,000    
Navios Containers | ABN AMRO Bank N.V. ($50,000) | Fifth Installment              
Debt Instrument [Line Items]              
Repayment installment         3,375    
Navios Containers | ABN AMRO Bank N.V. ($50,000) | Subsequent 11 Installments              
Debt Instrument [Line Items]              
Repayment installment         $ 1,650    
Navios Containers | BNP Paribas ($25,000)              
Debt Instrument [Line Items]              
Line of credit facility issuance date         May 25, 2018    
Line of credit facility maximum borrowing capacity         $ 25,000    
Number of vessels financed         1    
Interest rate description         LIBOR plus 300 basis points    
Loan margin percentage         3.00%    
Amount drawn down           25,000  
Amount outstanding         $ 0 23,611  
Number of repayment installments         18    
Repayment frequency         quarterly    
Repayment installment         $ 695    
Balloon payment on the last repayment date         $ 11,110    
Expiration date         May 31, 2023    
Navios Containers | BNP Paribas ($24,000)              
Debt Instrument [Line Items]              
Amount outstanding         $ 0 29,464  
Navios Containers | BNP Paribas ($24,000) | Initial Facility              
Debt Instrument [Line Items]              
Line of credit facility issuance date         Dec. 20, 2017    
Line of credit facility maximum borrowing capacity         $ 24,000    
Number of loan tranches         4    
Number of vessels financed         4    
Interest rate description         LIBOR plus 300 basis points    
Loan margin percentage         3.00%    
Amount drawn down           24,000  
Amount of each tranche         $ 6,000    
Navios Containers | BNP Paribas ($24,000) | Facility Extension              
Debt Instrument [Line Items]              
Line of credit facility issuance date         Sep. 30, 2018    
Line of credit facility maximum borrowing capacity         $ 9,000    
Number of vessels financed         1    
Interest rate description         LIBOR plus 300 basis points    
Loan margin percentage         3.00%    
Amount drawn down     $ 9,000        
Amount outstanding           8,679  
Number of repayment installments         19    
Repayment frequency         quarterly    
Repayment installment         $ 322    
Balloon payment on the last repayment date         $ 2,570    
Expiration date         Sep. 30, 2023    
Navios Containers | BNP Paribas ($24,000) | First Three Tranches | Initial Facility              
Debt Instrument [Line Items]              
Amount outstanding           15,428  
Number of repayment installments         16    
Repayment frequency         quarterly    
Repayment installment         $ 643    
Balloon payment on the last repayment date         $ 5,142    
Expiration date         Dec. 22, 2022    
Navios Containers | BNP Paribas ($24,000) | Fourth Tranche | Initial Facility              
Debt Instrument [Line Items]              
Amount outstanding           5,357  
Number of repayment installments         17    
Repayment frequency         quarterly    
Repayment installment         $ 214    
Balloon payment on the last repayment date         $ 1,714    
Expiration date         Feb. 28, 2023    
Navios Containers | HCOB ($36,000)              
Debt Instrument [Line Items]              
Line of credit facility issuance date         Jun. 28, 2018    
Line of credit facility maximum borrowing capacity         $ 36,000    
Number of vessels financed         2    
Interest rate description         LIBOR plus 325 basis points    
Loan margin percentage         3.25%    
Amount drawn down   $ 36,000          
Amount outstanding         $ 0 32,000  
Number of repayment installments         14    
Repayment frequency         quarterly    
Repayment installment         $ 1,200    
Balloon payment on the last repayment date         $ 15,200    
Expiration date         Jun. 30, 2022    
Navios Containers | HCOB facility agreement              
Debt Instrument [Line Items]              
Line of credit facility issuance date         Nov. 09, 2018    
Number of loan tranches         4    
Vessel capacity in TEU         10,000 TEU    
Number of vessels financed         4    
Interest rate description         LIBOR plus 325 basis points    
Loan margin percentage         3.25%    
Loan commitment fee per annum on the undrawn loan amount         0.75%    
Amount drawn down           0  
Navios Containers | HCOB facility agreement | Each Tranche              
Debt Instrument [Line Items]              
Line of credit facility maximum borrowing capacity         $ 31,800    
Number of repayment installments         19    
Repayment frequency         quarterly    
Repayment installment         $ 678    
Balloon payment on the last repayment date         $ 18,918    
Expiration date         Jul. 31, 2023    
Financial liability | Navios Containers              
Debt Instrument [Line Items]              
Line of credit facility issuance date         May 25, 2018    
Amount outstanding         $ 0 $ 87,530  
Sale and leaseback transaction, net proceeds financing activities         $ 119,000    
Number of containerships under sale and leaseback transaction         18    
Contractual obligation         $ 45,100    
Financial liability | Navios Containers | Fourteen Vessels              
Debt Instrument [Line Items]              
Sale and leaseback transaction, net proceeds financing activities $ 90,200            
Financial liability | Navios Containers | Fourteen Vessels | Per Vessel              
Debt Instrument [Line Items]              
Sale and leaseback transaction, number of repayment installments         60    
Sale and leaseback transaction, frequency of repayment installments         monthly    
Sale and leaseback transaction, monthly rental payments         $ 1,097