Summary of Significant Accounting Policies - (Details) - $ / shares
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6 Months Ended |
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Jan. 03, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
Dec. 06, 2018 |
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
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| Stockholders' equity, Reverse stock split |
one-for-ten reverse stock split
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| Common stock par value |
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$ 0.0001
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$ 0.0001
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| Common Stock Shares Outstanding |
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13,133,806
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12,843,414
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| Before 1-for-10 reverse stock split |
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| New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
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| Common Stock Shares Outstanding |
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128,400,000
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| Navios Logistics |
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| Percentage of Navios Holdings ownership |
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| Ownership percentage of Navios Holdings |
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63.80%
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| Navios Containers |
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| Percentage of Navios Holdings ownership |
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| Economic interest |
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3.70%
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| Navios Partners and its subsidiaries |
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| Percentage of Navios Holdings ownership |
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| Economic interest |
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20.50%
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| General partner interest of Navios Holdings |
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2.10%
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| Navios Acquisition and its subsidiaries |
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| Percentage of Navios Holdings ownership |
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| Economic interest |
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36.00%
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| Acropolis Chartering and Shipping Inc. ("Acropolis") |
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| Percentage of Navios Holdings ownership |
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| Economic interest |
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35.00%
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| Navios Europe I and its subsidiaries |
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| Percentage of Navios Holdings ownership |
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| Economic interest |
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47.50%
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| Navios Europe II and its subsidiaries |
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| Percentage of Navios Holdings ownership |
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| Economic interest |
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47.50%
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