Vessels, Net (Details) - USD ($)	6 Months Ended
	Sep. 30, 2021	Mar. 31, 2021
Vessels, Net
Vessels, net	$ 1,311,063,981	$ 1,377,028,255
Accumulated depreciation
Gain loss on vessel held for sale	3,500,000
Vessels
Cost
Balance at the beginning of the period	1,762,657,830
Other additions	5,437,162
Disposals	(62,311,861)
Balance at the end of the period	1,705,783,131
Accumulated depreciation
Balance at the beginning of the period	(385,629,575)
Disposals accumulated depreciation	23,410,912
Impairment	0
Disposals net book value	(38,900,949)
Depreciation	(32,500,487)
Balance at the end of the period	(394,719,150)
Mortgaged VLGC vessels, carrying value	$ 1,311,100,000	$ 1,337,400,000