Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 54,866,147	$ 7,435,926
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,160,982	5,501,080
Amortization of financing costs	634,500	505,184
Unrealized (gain)/loss on derivatives	3,724,545	(1,657,052)
Stock-based compensation expense	1,761,988	766,523
Loss on disposal of assets	105,549
Unrealized exchange differences	169,497	352,866
Other non-cash items	42,391	412,890
Changes in operating assets and liabilities
Trade receivables, net and accrued revenue	11,184,405	(6,396,978)
Prepaid expenses and other receivables	(463,697)	(913,932)
Due from related parties	(40,597,949)	1,230,238
Inventories	136,927	(2,586,644)
Other non-current assets	22	(70,795)
Trade accounts payable	(455,188)	2,055,008
Accrued expenses and other liabilities	2,561,642	1,251,154
Due to related parties	9,931	370,615
Payments for drydocking costs		(338,973)
Net cash provided by operating activities	46,841,692	7,917,110
Cash flows from investing activities:
Payments for vessels and vessels under construction	(477,333,533)	(184,129,520)
Restricted cash deposits	(8,802,789)
Restricted cash released		30,938,702
Proceeds from disposal of assets	136,660
Payments to acquire other fixed assets	(299,312)	(126,701)
Net cash used in investing activities	(486,298,974)	(153,317,519)
Cash flows from financing activities:
Proceeds from long-term debt borrowings	338,291,681
Repayment of long-term debt borrowings	(10,346,896)	(4,806,000)
Proceeds from common shares issuances		155,830,178
Purchase of treasury stock	(4,315,562)
Financing costs paid	(8,466,998)
Payments relating to issuance costs		(1,388,918)
Net cash provided by financing activities	315,162,225	149,635,260
Effects of exchange rates on cash and cash equivalents	(181,650)	(352,866)
Net (decrease)/increase in cash and cash equivalents	(124,476,707)	3,881,985
Cash and cash equivalents at the beginning of the period	204,821,183	279,131,795
Cash and cash equivalents at the end of the period	$ 80,344,476	$ 283,013,780