Long-Term Debt (Details)	1 Months Ended	3 Months Ended
	Jun. 30, 2015 USD ($) item	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)
Presented as follows:
Current portion of long-term debt	$ 25,325,629	$ 25,325,629	$ 15,677,553
Long-term debt-net of current portion	299,577,256	299,577,256	184,665,874
Total	324,902,885	324,902,885	200,343,427
Fees financed		4,218,263
Royal Bank of Scotland plc (RBS)
Presented as follows:
Total	117,828,000	117,828,000	119,106,500
Tranche A
Presented as follows:
Total	40,800,000	40,800,000	40,800,000
Tranche B
Presented as follows:
Total	29,405,500	29,405,500	30,684,000
Tranche C
Presented as follows:
Total	47,622,500	47,622,500	47,622,500
2015 Debt Facility
Presented as follows:
Total	207,074,885	207,074,885	81,236,927
Fees financed		1,800,000
Balance available to be drawn	$ 549,400,000	549,400,000
Number of tranches in which loan facility is divided | item	4
Commercial Financing
Presented as follows:
Total	$ 68,173,145	68,173,145	26,695,381
KEXIM Direct Financing
Presented as follows:
Total	55,748,119	55,748,119	21,890,212
KEXIM Guaranteed
Presented as follows:
Total	55,149,845	55,149,845	21,655,293
K-sure Insured
Presented as follows:
Total	$ 28,003,776	$ 28,003,776	$ 10,996,041