Summary of Significant Accounting Policies - Basis Of Presentation, Subsidiaries, Affiliates and Restricted Cash (Details)
6 Months Ended
Jun. 30, 2017
Navios Partners and its subsidiaries  
Percentage of Navios Holdings ownership  
Ownership percentage of Navios Holdings 20.90%
General partner interest of Navios Holdings 2.00%
Navios Acquisition and its subsidiaries  
Percentage of Navios Holdings ownership  
Ownership percentage of Navios Holdings 46.20%
Acropolis Chartering and Shipping Inc. ("Acropolis")  
Percentage of Navios Holdings ownership  
Ownership percentage of Navios Holdings 50.00%
Ownership percentage of Navios Holdings 35.00%
Navios Europe I  
Percentage of Navios Holdings ownership  
Ownership percentage of Navios Holdings 47.50%
Navios Europe II  
Percentage of Navios Holdings ownership  
Ownership percentage of Navios Holdings 47.50%
Navios Logistics  
Percentage of Navios Holdings ownership  
Ownership percentage of Navios Holdings 63.80%
Navios Containers and its subsidiaries  
Percentage of Navios Holdings ownership  
Ownership percentage of Navios Holdings 9.90%