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Subsequent Events (Details Narrative)
$ / shares in Units, $ in Thousands
1 Months Ended 6 Months Ended
Jul. 29, 2023
USD ($)
Aug. 31, 2023
$ / shares
Jul. 31, 2023
USD ($)
t
$ / shares
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jul. 30, 2023
Subsequent Event [Line Items]            
Convertible preferred stock dividends paid       $ 405 $ 436  
Series A Preferred Stock [Member] | Dividend Declared [Member] | Forecast [Member]            
Subsequent Event [Line Items]            
Dividend declared | $ / shares   $ 0.1615        
Subsequent Event [Member] | Secured Loan - Seventhone Corp. [Member]            
Subsequent Event [Line Items]            
[custom:DebtInstrumentBasisSpreadOnVariableRatePercentage-0]           2.35
Subsequent Event [Member] | Drybulk Joint Venture [Member]            
Subsequent Event [Line Items]            
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures     $ 6,800      
[custom:UltramaxBulkCarrierTon-0] | t     63,520      
Payments for Purchase of Other Assets     $ 28,500      
Short-Term Bank Loans and Notes Payable     $ 19,000      
Subsequent Event [Member] | Series A Preferred Stock [Member] | Dividend Paid [Member]            
Subsequent Event [Line Items]            
Dividend declared | $ / shares     $ 0.1615      
Convertible preferred stock dividends paid     $ 65      
Subsequent Event [Member] | Series A Preferred Stock [Member] | Dividend Declared [Member]            
Subsequent Event [Line Items]            
Convertible preferred stock dividends paid $ 65          
Dividend payable date Aug. 21, 2023          
Dividend record of date Aug. 14, 2023