Borrowings - Senior and Ship Mortgage Notes Navios Holdings and Navios Logistics (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
10 Months Ended |
12 Months Ended |
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
Oct. 31, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Amount used for repayment of debt |
|
|
|
|
|
$ 48,600
|
|
|
| Gain/ (Loss) on bond and debt extinguishment |
$ 6,464
|
$ 0
|
$ 6,464
|
$ 1,715
|
|
(981)
|
$ 29,187
|
$ 0
|
| Dividends paid |
|
|
|
|
|
0
|
3,681
|
$ 35,350
|
| Dividends paid to the non controlling shareholders |
|
|
|
|
|
25,323
|
|
|
| Navios Logistics |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Face amount at issuance date |
166,853
|
|
$ 166,853
|
|
|
|
|
|
| Minimum | Navios Logistics |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Maturity date |
|
|
Aug. 31, 2020
|
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|
|
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|
| Maximum | Navios Logistics |
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|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Maturity date |
|
|
Nov. 30, 2024
|
|
|
|
|
|
| 2022 Senior Secured Notes |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Face amount at issuance date |
$ 305,000
|
|
$ 305,000
|
|
|
$ 305,000
|
|
|
| Issuance date/Date of agreement |
|
|
Nov. 21, 2017
|
|
|
Nov. 21, 2017
|
|
|
| Debt instrument, issuance price percentage |
|
|
97.00%
|
|
|
97.00%
|
|
|
| Fixed interest rate |
11.25%
|
|
11.25%
|
|
|
11.25%
|
|
|
| Gain/ (Loss) on bond and debt extinguishment |
|
|
|
|
|
$ (2,695)
|
|
|
| 2022 Senior Secured Notes | Upon occurrence of certain change of control events |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Redemption price percentage |
|
|
101.00%
|
|
|
|
|
|
| 2022 Senior Secured Notes | On or after November 21, 2017 |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Redemption price percentage |
|
|
108.438%
|
|
|
108.438%
|
|
|
| Senior Notes due 2019 |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Face amount at issuance date |
$ 350,000
|
|
$ 350,000
|
|
|
$ 350,000
|
|
|
| Issuance date/Date of agreement |
|
|
Jan. 28, 2011
|
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|
Jan. 28, 2011
|
|
|
| Amount oustanding |
|
|
|
|
|
$ 0
|
291,094
|
|
| Fixed interest rate |
8.125%
|
|
8.125%
|
|
|
8.125%
|
|
|
| Repurchase of notes |
|
|
|
|
$ 58,906
|
|
|
|
| Repurchase of senior notes - cash consideration |
|
|
|
|
30,671
|
|
|
|
| Gain/ (Loss) on bond and debt extinguishment |
|
|
|
|
$ 27,670
|
|
|
|
| 2022 Notes |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Face amount at issuance date |
$ 650,000
|
|
$ 650,000
|
|
|
$ 650,000
|
|
|
| Issuance date/Date of agreement |
|
|
Nov. 29, 2013
|
|
|
Nov. 29, 2013
|
|
|
| Amount oustanding |
$ 614,339
|
|
$ 614,339
|
|
|
$ 650,000
|
650,000
|
|
| Fixed interest rate |
7.375%
|
|
7.375%
|
|
|
7.375%
|
|
|
| Repurchase of notes |
|
|
$ 35,661
|
|
|
|
|
|
| Repurchase of senior notes - cash consideration |
|
|
28,796
|
|
|
|
|
|
| Gain/ (Loss) on bond and debt extinguishment |
|
|
$ 6,464
|
|
|
|
|
|
| 2022 Notes | Upon occurrence of certain change of control events |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Redemption price percentage |
|
|
101.00%
|
|
|
101.00%
|
|
|
| 2022 Notes | On or after January 15, 2017 |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Redemption price percentage |
|
|
105.531%
|
|
|
105.531%
|
|
|
| 2022 Logistics Senior Notes |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Amount oustanding |
$ 375,000
|
|
$ 375,000
|
|
|
$ 375,000
|
$ 375,000
|
|
| 2022 Logistics Senior Notes | Navios Logistics |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Face amount at issuance date |
$ 375,000
|
|
$ 375,000
|
|
|
$ 375,000
|
|
|
| Issuance date/Date of agreement |
|
|
Apr. 22, 2014
|
|
|
Apr. 22, 2014
|
|
|
| Fixed interest rate |
7.25%
|
|
7.25%
|
|
|
7.25%
|
|
|
| Maturity date |
|
|
May 01, 2022
|
|
|
May 01, 2022
|
|
|
| Maximum dividend percentage |
|
|
|
|
|
6.00%
|
|
|
| 2022 Logistics Senior Notes | Navios Logistics | Upon occurrence of certain change of control events |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Redemption price percentage |
|
|
101.00%
|
|
|
101.00%
|
|
|
| 2022 Logistics Senior Notes | All subsidiaries of Navios Logistics |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Percentage of ownership |
|
|
|
|
|
100.00%
|
|
|
| 2022 Logistics Senior Notes | On or after May 1, 2017 | Navios Logistics |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Redemption price percentage |
|
|
105.438%
|
|
|
105.438%
|
|
|
| Navios Logistics Alpha Bank Loan |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Line of credit facility maximum borrowing capacity |
|
|
|
|
|
$ 14,000
|
|
|
| Interest Rate |
|
|
|
|
|
LIBOR (90 days) plus 315 basis points
|
|
|
| Fixed interest rate |
|
|
|
|
|
3.15%
|
|
|
| Duration of loan |
|
|
|
|
|
5 years
|
|
|
| Repayment installments |
|
|
|
|
|
20
|
|
|
| Repayment frequency |
|
|
|
|
|
quarterly
|
|
|
| Balloon payment on the last repayment date |
|
|
|
|
|
$ 7,000
|
|
|
| Navios Logistics Term Loan B Facility |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Line of credit facility maximum borrowing capacity |
|
|
|
|
|
$ 100,000
|
|
|
| Interest Rate |
|
|
|
|
|
LIBOR plus 475 basis points
|
|
|
| Fixed interest rate |
|
|
|
|
|
4.75%
|
|
|
| Duration of loan |
|
|
|
|
|
4 years
|
|
|
| Debt amortization percentage |
|
|
|
|
|
1.00%
|
|
|
| Dividends paid |
|
|
|
|
|
$ 70,000
|
|
|
| Dividends paid to Navios Holdings |
|
|
|
|
|
44,677
|
|
|
| Dividends paid to the non controlling shareholders |
|
|
|
|
|
$ 25,323
|
|
|
| Line of credit facility issuance date |
|
|
|
|
|
Nov. 03, 2017
|
|
|
| Debt Instrument Collateral |
|
|
|
|
|
5 tanker vessels
|
|
|