Interest and Finance Costs (Details) - USD ($)	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Interest and Finance Costs
Interest incurred	$ 24,695,674	$ 14,350,900	$ 2,657,943
Amortization of financing costs	3,709,421	2,499,185	830,899
Other finance costs	566,847	715,942	301,868
Capitalized interest		(4,809,014)	(3,501,620)
Total	$ 28,971,942	$ 12,757,013	$ 289,090