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Vessels, Net (Details) - USD ($)
9 Months Ended
Dec. 31, 2021
Mar. 31, 2021
Vessels, Net    
Vessels, net $ 1,252,405,737 $ 1,377,028,255
Accumulated depreciation    
Transfer to vessel held for sale (43,193,058)  
Gain loss on vessel held for sale 3,500,000  
Vessel held for sale 43,417,348  
Vessels    
Cost    
Balance at the beginning of the period 1,762,657,830  
Other additions 5,980,471  
Transfers to vessel held for sale (68,845,783)  
Disposals (62,311,861)  
Balance at the end of the period 1,637,480,657  
Accumulated depreciation    
Balance at the beginning of the period (385,629,575)  
Transfer to vessel held for sale 25,652,725  
Disposals accumulated depreciation 23,410,912  
Impairment 0  
Disposals net book value (38,900,949)  
Depreciation (48,508,982)  
Balance at the end of the period (385,074,920)  
Mortgaged VLGC vessels, carrying value $ 1,212,300,000 $ 1,337,400,000