Summary of Significant Accounting Policies - Basis Of Presentation, Subsidiaries, Affiliates and Restricted Cash (Details) - USD ($)
$ in Thousands |
12 Months Ended |
|
|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Restricted Cash And Cash Equivalents Items [Line Items] |
|
|
|
| Restricted cash |
$ 6,558
|
$ 5,386
|
$ 13,480
|
| Navios Logistics |
|
|
|
| Percentage of Navios Holdings ownership |
|
|
|
| Ownership percentage of Navios Holdings |
63.80%
|
|
|
| Navios Logistics | Letter of Credit |
|
|
|
| Restricted Cash And Cash Equivalents Items [Line Items] |
|
|
|
| Restricted cash |
|
2,900
|
|
| Navios Partners and its subsidiaries |
|
|
|
| Percentage of Navios Holdings ownership |
|
|
|
| Economic interest |
20.80%
|
|
|
| General partner interest of Navios Holdings |
2.00%
|
|
|
| Navios Acquisition and its subsidiaries |
|
|
|
| Percentage of Navios Holdings ownership |
|
|
|
| Economic interest |
46.20%
|
|
|
| Acropolis Chartering and Shipping Inc. ("Acropolis") |
|
|
|
| Percentage of Navios Holdings ownership |
|
|
|
| Ownership percentage of Navios Holdings |
50.00%
|
|
|
| Economic interest |
35.00%
|
|
|
| Navios Europe I |
|
|
|
| Percentage of Navios Holdings ownership |
|
|
|
| Economic interest |
47.50%
|
|
|
| Navios Europe II |
|
|
|
| Percentage of Navios Holdings ownership |
|
|
|
| Economic interest |
47.50%
|
|
|
| Navios Containers |
|
|
|
| Percentage of Navios Holdings ownership |
|
|
|
| Economic interest |
3.40%
|
|
|
| Retention Accounts |
|
|
|
| Restricted Cash And Cash Equivalents Items [Line Items] |
|
|
|
| Restricted cash |
$ 5,968
|
1,896
|
|
| Amount Held as Security |
|
|
|
| Restricted Cash And Cash Equivalents Items [Line Items] |
|
|
|
| Restricted cash |
$ 590
|
$ 590
|
|