Consolidated Statements of Operations - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Revenues.
Net pool revenues—related party	$ 106,958,576	$ 115,753,153	$ 202,918,232
Time charter revenues	50,176,166	49,474,510	38,737,172
Voyage charter revenues	2,068,491	1,296,952	46,194,134
Other revenues, net	131,527	922,556	1,358,291
Total revenues	159,334,760	167,447,171	289,207,829
Expenses
Voyage expenses	2,213,773	2,965,978	12,064,682
Vessel operating expenses	64,312,644	66,108,062	47,119,990
Depreciation and amortization	65,329,951	65,057,487	42,591,942
General and administrative expenses	26,186,332	21,732,864	29,836,029
Loss on disposal of assets			1,125,395
Total expenses	158,042,700	155,864,391	132,738,038
Other income—related parties	2,549,325	2,410,542	1,945,396
Operating income	3,841,385	13,993,322	158,415,187
Other income/(expenses)
Interest and finance costs	(35,658,045)	(28,971,942)	(12,757,013)
Interest income	440,059	137,556	148,360
Unrealized gain/(loss) on derivatives	8,421,531	27,491,333	(8,917,503)
Realized loss on derivatives	(1,328,886)	(13,797,478)	(6,858,126)
Gain on early extinguishment of debt	4,117,364
Foreign currency loss, net	(234,094)	(294,606)	(342,523)
Total other income/(expenses), net	(24,242,071)	(15,435,137)	(28,726,805)
Net income/(loss)	$ (20,400,686)	$ (1,441,815)	$ 129,688,382
Weighted average shares outstanding Basic (in shares)	54,039,886	54,079,139	56,657,570
Weighted average shares outstanding Diluted (in shares)	54,039,886	54,079,139	56,707,094
Earnings/(loss) per common share – basic (in dollars per share)	$ (0.38)	$ (0.03)	$ 2.29
Earnings/(loss) per common share – diluted (in dollars per share)	$ (0.38)	$ (0.03)	$ 2.29