Description of Business (Details Narrative) - USD ($)
$ in Thousands
4 Months Ended 6 Months Ended 12 Months Ended
Apr. 21, 2020
Jun. 30, 2021
Dec. 31, 2020
Mar. 31, 2021
Jan. 04, 2021
Jun. 30, 2020
Junior Loan II [Member]            
Repayments of Debt $ 5,000          
Navios Partners [Member]            
Percentage of ownership   9.70%     12.60%  
Navios Containers [Member]            
Ownership percentage of Navios Holdings     3.90%      
Percentage of ownership   0.00%   3.90%    
Navios Acquisition [Member]            
Ownership percentage of Navios Holdings   28.00%        
Percentage of ownership   28.00%        
Navios Europe II [Member]            
Percentage of ownership           47.50%
Navios Europe II [Member] | Junior Loan II [Member]            
Repayments of Debt $ 5,000          
Navios Logistics Subsidiary [Member]            
Entity Incorporation, Date of Incorporation   Dec. 17, 2007        
Ownership percentage of Navios Holdings   63.80%        
Navios Holdings [Member] | Navios Europe II [Member]            
Percentage of ownership   47.50%        
Voting interests   50.00%        
Navios Acquisition [Member] | Navios Europe II [Member]            
Percentage of ownership   47.50%        
Voting interests   50.00%        
Navios Partners [Member] | Navios Europe II [Member]            
Percentage of ownership   5.00%        
Voting interests   0.00%