Description of Business (Details) - USD ($)
$ in Thousands |
5 Months Ended |
9 Months Ended |
12 Months Ended |
Jun. 08, 2017 |
Sep. 30, 2018 |
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 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 |
|
20.20%
|
20.80%
|
| General partner interest of Navios Holdings |
|
2.00%
|
2.00%
|
| Trading Symbol |
|
NMM
|
|
| Navios Acquisition |
|
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
|
| Ownership percentage of Navios Holdings |
|
48.60%
|
46.20%
|
| Percentage of voting stock of Navios Holdings in Navios Acquisition |
|
45.30%
|
42.90%
|
| Trading Symbol |
|
NNA
|
|
| Share repurchase program, Authorized amount |
|
$ 25,000
|
|
| Number of stocks repurchased |
|
8,055,074
|
|
| Navios Midstream |
|
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
|
| Ownership percentage of Navios Holdings |
|
0.00%
|
0.00%
|
| Trading Symbol |
|
NAP
|
|
| Navios Containers |
|
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
|
| Ownership percentage of Navios Holdings |
|
3.10%
|
3.40%
|
| Trading Symbol |
|
NMCI
|
|
| Navios Acquisition |
|
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
|
| Ownership percentage of Navios Holdings |
|
48.60%
|
46.20%
|
| Percentage of voting stock of Navios Holdings in Navios Acquisition |
|
|
42.90%
|
| Private placement | Navios Containers |
|
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
|
| Noncontrolling Interest, Increase from Subsidiary Equity Issuance |
$ 5,000
|
|
|
| Warrants | Navios Containers |
|
|
|
| Subsidiary or Equity Method Investee [Line Items] |
|
|
|
| Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |
|
1.70%
|
1.70%
|