Description of Business - Related Parties - Navios Europe I and Navios Europe II (Details) - USD ($)
$ in Thousands
4 Months Ended 6 Months Ended 12 Months Ended
Apr. 21, 2020
Jun. 30, 2020
Dec. 31, 2019
Feb. 18, 2015
Oct. 09, 2013
Navios Europe I          
Related Party Transaction [Line Items]          
Percentage of ownership     47.50%    
Navios Europe I | Container vessels          
Related Party Transaction [Line Items]          
Number of vessels     5    
Navios Europe I | Tanker vessels          
Related Party Transaction [Line Items]          
Number of vessels     5    
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%    
Navios Europe II          
Related Party Transaction [Line Items]          
Percentage of ownership   47.50%      
Navios Europe II | Navios Revolving Loans II | Navios Holdings, Navios Acquisitions,Navios Partners          
Related Party Transaction [Line Items]          
Debt Instrument, Decrease, Forgiveness $ 5,000        
Navios Europe II | Dry bulk vessels          
Related Party Transaction [Line Items]          
Number of vessels   7      
Navios Europe II | Container vessels          
Related Party Transaction [Line Items]          
Number of vessels   7      
Navios Europe II | Navios Holdings          
Related Party Transaction [Line Items]          
Percentage of ownership       47.50%  
Percentage of voting stock held   50.00%      
Navios Europe II | Navios Acquisition          
Related Party Transaction [Line Items]          
Percentage of ownership       47.50%  
Percentage of voting stock held   50.00%      
Navios Europe II | Navios Partners          
Related Party Transaction [Line Items]          
Percentage of ownership       5.00%  
Percentage of voting stock held   0.00%