Description of Business (Details) - USD ($)
$ in Thousands |
5 Months Ended |
12 Months Ended |
Jun. 08, 2017 |
Dec. 31, 2017 |
| Subsidiary or Equity Method Investee [Line Items] |
|
|
| Trading Symbol |
|
NM
|
| Navios Logistics |
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
| Ownership percentage of Navios Holdings |
|
63.80%
|
| Navios Partners |
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
| Ownership percentage of Navios Holdings |
|
20.80%
|
| General partner interest of Navios Holdings |
|
2.00%
|
| Trading Symbol |
|
NMM
|
| Navios Acquisition |
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
| Ownership percentage of Navios Holdings |
|
46.20%
|
| Percentage of voting stock of Navios Holdings in Navios Acquisition |
|
42.90%
|
| Trading Symbol |
|
NNA
|
| Navios Midstream |
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
| Ownership percentage of Navios Holdings |
|
0.00%
|
| Trading Symbol |
|
NAP
|
| Navios Containers |
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
| Ownership percentage of Navios Holdings |
|
3.40%
|
| Trading Symbol |
|
NMCI
|
| Navios Containers | Private placement |
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
| Noncontrolling Interest, Increase from Subsidiary Equity Issuance |
$ 5,000
|
|
| Navios Containers | Warrants |
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
| Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |
|
1.70%
|