Consolidated Statements of Operations - USD ($)	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Revenues.
Revenues	$ 158,032,485	$ 159,334,760	$ 167,447,171
Expenses
Voyage expenses	1,697,883	2,213,773	2,965,978
Charter hire expenses	237,525
Vessel operating expenses	66,880,568	64,312,644	66,108,062
Depreciation and amortization	65,201,151	65,329,951	65,057,487
General and administrative expenses	24,434,246	26,186,332	21,732,864
Professional and legal fees related to the BW Proposal	10,022,747
Total expenses	168,474,120	158,042,700	155,864,391
Other income-related party	2,479,599	2,549,325	2,410,542
Operating income/(loss)	(7,962,036)	3,841,385	13,993,322
Other income/(expenses)
Interest and finance costs	40,649,231	35,658,045	28,971,942
Interest income	1,755,259	440,059	137,556
Unrealized gain/(loss) on derivatives	(7,816,401)	8,421,531	27,491,333
Realized gain/(loss) on derivatives	3,788,123	(1,328,886)	(13,797,478)
Gain on early extinguishment of debt		4,117,364
Other loss, net	(61,619)	(234,094)	(294,606)
Total other income/(expenses), net	(42,983,869)	(24,242,071)	(15,435,137)
Net loss	$ (50,945,905)	$ (20,400,686)	$ (1,441,815)
Weighted average shares outstanding basic and diluted (in shares)	54,513,118	54,039,886	54,079,139
Loss per common share—basic and diluted (in dollars per share)	$ (0.93)	$ (0.38)	$ (0.03)
Net pool revenue - related party
Revenues.
Revenues	$ 120,015,771	$ 106,958,576	$ 115,753,153
Time charter revenue
Revenues.
Revenues	37,726,214	50,176,166	49,474,510
Voyage charter revenue
Revenues.
Revenues		2,068,491	1,296,952
Other revenues, net
Revenues.
Revenues	$ 290,500	$ 131,527	$ 922,556