Vessels Under Construction (Details)	9 Months Ended
	Dec. 31, 2015 USD ($)
Vessels under construction
Balance	$ 398,175,504
Vessels delivered (transferred to Vessels)	1,211,595,756
Balance	26,523,881
Vessels under commitment
Vessels under construction
Balance	398,175,504
Installment payments to shipyards	814,098,361
Other capitalized expenditures	21,184,618
Capitalized interest	4,661,154
Vessels delivered (transferred to Vessels)	(1,211,595,756)
Balance	26,523,881
LPG coolant cost included in Other capitalized expenditures	4,800,000
Vessels under commitment | Third party vendors
Vessels under construction
Other capitalized expenditures	$ 16,400,000