Borrowings (Table) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Long Term Loans From Bank $ 346,604 $ 274,855
Total borrowings 1,717,768 1,675,415
Less: current portion, net (33,885) (29,827)
Less: deferred finance costs and discount, net (35,280) (24,320)
Total long-term borrowings 1,648,603 1,621,268
Navios Holdings borrowings    
Debt Instrument [Line Items]    
Total borrowings 1,174,856 1,240,647
Navios Logistics borrowings    
Debt Instrument [Line Items]    
Other long-term loans 253 321
2019 Notes    
Debt Instrument [Line Items]    
Senior Notes 0 291,094
2022 Senior Secured Notes    
Debt Instrument [Line Items]    
Senior Notes 305,000 0
2022 Notes    
Debt Instrument [Line Items]    
Senior Notes 650,000 650,000
2022 Logistics Senior Notes    
Debt Instrument [Line Items]    
Senior Notes 375,000 375,000
Navios Logistics Notes Payable    
Debt Instrument [Line Items]    
Senior Notes 31,109 34,447
Navios Logistics BBVA Loan Facility    
Debt Instrument [Line Items]    
Long Term Loans From Bank 23,250 25,000
Navios Logistics Alpha Bank Loan    
Debt Instrument [Line Items]    
Long Term Loans From Bank 13,300 0
Navios Logistics Term Loan B Facility    
Debt Instrument [Line Items]    
Long Term Loans From Bank 100,000 0
Total Navios Logistics borrowings | Navios Logistics borrowings    
Debt Instrument [Line Items]    
Total borrowings 542,912 434,768
Commerzbank A.G. ($240,000)    
Debt Instrument [Line Items]    
Line of credit 0 19,857
HSH Nordbank ($15,300)    
Debt Instrument [Line Items]    
Line of credit 14,535 0
Loan Facility Credit Agricole ($40,000)    
Debt Instrument [Line Items]    
Line of credit 17,674 18,880
Loan Facility Credit Agricole ($23,000)    
Debt Instrument [Line Items]    
Line of credit 14,074 14,755
Loan Facility Credit Agricole ($23,000)    
Debt Instrument [Line Items]    
Line of credit 14,450 15,150
Loan Facility DVB Bank SE ($72,000)    
Debt Instrument [Line Items]    
Line of credit 50,140 54,540
Loan Facility DVB Bank SE ($41,000)    
Debt Instrument [Line Items]    
Line of credit 33,816 37,293
Loan Facility Credit Agricole ($22,500)    
Debt Instrument [Line Items]    
Line of credit 15,188 16,313
Loan Facility DVB Bank SE ($40,000)    
Debt Instrument [Line Items]    
Line of credit 18,254 28,000
Loan Facility Alpha Bank ($31,000)    
Debt Instrument [Line Items]    
Line of credit 25,600 27,400
Loan Facility Alpha Bank ($16,125)    
Debt Instrument [Line Items]    
Line of credit 16,125 16,125
Navios Acquisition Loan    
Debt Instrument [Line Items]    
Line of credit $ 0 $ 51,240