Vessels, Net (Details) - USD ($)	9 Months Ended
	Dec. 31, 2020	Mar. 31, 2020
Vessels, Net
Vessels, net	$ 1,393,340,037	$ 1,437,658,833
Vessels
Cost
Balance at the beginning of the period	1,757,285,233
Other additions	5,382,833
Balance at the end of the period	1,762,668,066
Accumulated depreciation
Balance at the beginning of the period	(319,626,400)
Impairment	0
Depreciation	(49,701,629)
Balance at the end of the period	(369,328,029)
Mortgaged VLGC vessels, carrying value	$ 1,350,100,000	$ 1,437,700,000