Description of Business - Related Parties - Navios Europe I (Details)
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 18, 2013
Oct. 09, 2013
Navios Europe I      
Related Party Transaction [Line Items]      
Number of vessels   10  
Navios Europe I      
Related Party Transaction [Line Items]      
Percentage of ownership 47.50%    
Navios Europe I | Navios Holdings      
Related Party Transaction [Line Items]      
Percentage of ownership     47.50%
Percentage of voting stock held 50.00%    
Navios Europe I | Navios Acquisition      
Related Party Transaction [Line Items]      
Percentage of ownership     47.50%
Percentage of voting stock held 50.00%    
Navios Europe I | Navios Partners      
Related Party Transaction [Line Items]      
Percentage of ownership     5.00%
Percentage of voting stock held 0.00%    
Tanker vessels | Navios Europe I      
Related Party Transaction [Line Items]      
Number of vessels 5    
Container vessels | Navios Europe I      
Related Party Transaction [Line Items]      
Number of vessels 5