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Financial Instruments and Fair Value Disclosures (FV) (Details) - USD ($)
3 Months Ended 9 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Mar. 31, 2025
Mar. 31, 2022
Mar. 31, 2021
Nov. 17, 2020
Nov. 16, 2020
Oct. 09, 2020
Oct. 08, 2020
May 31, 2020
Apr. 30, 2020
Mar. 31, 2020
Derivative Instruments                            
Change in fair value $ 479,534 $ 1,446,395 $ 3,952,414 $ (5,291,504)                    
Realized gain/(loss) on derivatives (760,991) 449,276 (3,696,915) 2,191,417                    
Derivatives not designated as hedging instruments                            
Derivative Instruments                            
Gain/(loss) on derivatives, net (281,457) 1,895,671 255,499 (3,100,087)                    
Interest rate swap                            
Derivative Instruments                            
Derivative fixed interest rate (as a percent)                       1.4675% 1.4275%  
Interest rate swap | Derivatives not designated as hedging instruments | Unrealized gain/(loss) on derivatives                            
Derivative Instruments                            
Change in fair value 342,902 801,395 1,346,972 (6,881,504)                    
Interest rate swap | Derivatives not designated as hedging instruments | Realized gain/(loss) on derivatives                            
Derivative Instruments                            
Realized gain/(loss) on derivatives (914,910) 449,276 (2,908,245) 2,191,417                    
Interest rate swap | Derivatives not designated as hedging instruments | Long-term liabilities-Derivatives instruments                            
Derivative Instruments                            
Derivative Liabilities 7,805,857   7,805,857                     $ 9,152,829
Interest rate swap | Citibank N. A.                            
Derivative Instruments                            
Derivative fixed interest rate (as a percent)                   1.0908% 1.933%      
Nominal value         $ 95,200,000   $ 200,000,000     $ 200,000,000        
Interest rate swap | ING Bank N. V.                            
Derivative Instruments                            
Derivative fixed interest rate (as a percent)               1.145% 2.002%          
Nominal value         $ 23,800,000 $ 50,000,000   $ 50,000,000            
Forward freight agreements | Derivatives not designated as hedging instruments | Unrealized gain/(loss) on derivatives                            
Derivative Instruments                            
Change in fair value 136,632 $ 645,000 2,605,442 $ 1,590,000                    
Forward freight agreements | Derivatives not designated as hedging instruments | Realized gain/(loss) on derivatives                            
Derivative Instruments                            
Realized gain/(loss) on derivatives 153,919   (788,670)                      
Forward freight agreements | Derivatives not designated as hedging instruments | Current liabilities-Derivative instruments                            
Derivative Instruments                            
Derivative Liabilities $ 0   $ 0                     $ 2,605,442