Vessels, Net (Details)	6 Months Ended
	Sep. 30, 2015 USD ($) item	Mar. 31, 2015 USD ($)
Cost
Impairment	$ 0
Accumulated depreciation
Vessels, net	1,051,578,941	$ 419,976,053
Mortgaged VLGC vessels, carrying value	1,047,800,000	416,000,000
Vessels
Cost
Balance at the beginning of the period	439,180,669
Additions	644,784,354
Disposals	(268,281)
Balance at the end of the period	1,083,696,742
Accumulated depreciation
Balance at the beginning of the period	(19,204,616)
Disposals accumulated depreciation	26,060
Depreciation	(12,939,245)
Balance at the end of the period	(32,117,801)
Vessels, net	1,051,578,941	$ 419,976,053
Disposals net book value	$ (242,221)
Number of vessels delivered by builder | item	9