Vessels Under Construction (Details)	3 Months Ended
	Jun. 30, 2015 USD ($)
Vessels under construction
Balance	$ 398,175,504
Balance	363,780,196
Vessels under commitment
Vessels under construction
Balance	398,175,504
Installment payments to shipyards	198,753,063
Other capitalized expenditures	6,946,531
Capitalized interest	1,355,979
Vessels delivered (transferred to Vessels)	(241,450,881)
Balance	363,780,196
Vessels under commitment | Third party vendors
Vessels under construction
Other capitalized expenditures	$ 6,900,000