Preferred and Common Stock (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Jan. 15, 2022
Jun. 30, 2022
Jun. 30, 2021
Mar. 21, 2019
Apr. 18, 2019
Jun. 30, 2022
Jul. 13, 2021
Jun. 30, 2021
Jul. 15, 2017
Dec. 31, 2021
Sep. 13, 2022
Jan. 03, 2022
Class of Stock [Line Items]                        
Shares tendered, nominal value   $ 0       $ 0       $ 0    
Common Stock, Shares, Outstanding   25,238,591       25,238,591       25,198,620    
Preferred Stock, Shares Outstanding   24,032       24,032       23,032    
Grimaud [Member]                        
Class of Stock [Line Items]                        
Sale of Stock, Number of Shares Issued in Transaction                   9,301,542    
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture             9,301,542          
Net proceeds                   $ 44,437    
Costs from sale of common stock                   $ 176    
Navios Corporation [Member]                        
Class of Stock [Line Items]                        
Treasury Stock, Common, Shares   2,414,263       2,414,263            
American Depositary Shares [Member] | Series G and Series H [Member]                        
Class of Stock [Line Items]                        
Percentage of the increase of the preferred dividend rate                 25.00%      
Stock Plan Approved By B.O.D [Member]                        
Class of Stock [Line Items]                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period 40,000                      
Series G Preferred Stock [Member]                        
Class of Stock [Line Items]                        
Preferred Stock, Shares Outstanding   5,350       5,350       5,350    
Series G Preferred Stock [Member] | Exchange program for 66 2/3% shares [Member]                        
Class of Stock [Line Items]                        
Number of shares issued for the exchange offer         8,841              
Shares tendered, nominal value         $ 21,271              
Tender offer expenses         620              
Payments for tender offer expenses         4,423              
2024 Notes issued         3,879              
Gain/ (Loss) from stock redemption recognized in Retained Earnings         12,568              
Dividends cancelled         $ 6,798              
Series G Preferred Stock [Member] | American Depositary Shares [Member]                        
Class of Stock [Line Items]                        
Sale of Stock, Number of Shares Issued in Transaction           2,000,000            
Preferred Stock, Liquidation Preference Per Share   $ 2,500       $ 2,500            
Preferred Stock, Redemption Price Per Share   $ 25       $ 25            
Preferred Stock, Dividend Rate, Percentage           8.75%            
Series H Preferred Stock [Member]                        
Class of Stock [Line Items]                        
Preferred Stock, Shares Outstanding   17,682       17,682       17,682    
Series H Preferred Stock [Member] | Exchange program for 66 2/3% shares [Member]                        
Class of Stock [Line Items]                        
Number of shares issued for the exchange offer       10,930                
Shares tendered, nominal value       $ 26,297                
Tender offer expenses       997                
Payments for tender offer expenses       4,188                
2024 Notes issued       4,747                
Gain/ (Loss) from stock redemption recognized in Retained Earnings       16,365                
Dividends cancelled       $ 7,678                
Series H Preferred Stock [Member] | American Depositary Shares [Member]                        
Class of Stock [Line Items]                        
Sale of Stock, Number of Shares Issued in Transaction           4,800,000            
Preferred Stock, Liquidation Preference Per Share   $ 2,500       $ 2,500            
Preferred Stock, Redemption Price Per Share   $ 25       $ 25            
Preferred Stock, Dividend Rate, Percentage           8.625%            
Preferred Stock [Member]                        
Class of Stock [Line Items]                        
Preferred Stock, Shares Outstanding   24,032       24,032       23,032    
Preferred Stock [Member] | Dividends Undeclared [Member]                        
Class of Stock [Line Items]                        
Undeclared preferred dividends           $ 32,909            
Series I Preferred Stock [Member] | Convertible Debenture [Member]                        
Class of Stock [Line Items]                        
Convertible Preferred Stock, Shares Issued upon Conversion                       1,000
Common Stock, Shares, Outstanding   9,133,147       9,133,147         29,754,721  
Debt Instrument, Convertible, Conversion Price   $ 3.93       $ 3.93            
Preferred Stock, Shares Outstanding   1,000       1,000            
Common Stock [Member]                        
Class of Stock [Line Items]                        
Common Stock, Shares, Outstanding   25,238,591       25,238,591       25,198,620    
Restricted Stock [Member]                        
Class of Stock [Line Items]                        
Forfeited shares of common stock   0 56     29   83        
Vested units   0 0     37,879   37,879