Consolidated Statements of Operations - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Revenues.
Revenues	$ 274,221,448	$ 315,938,812	$ 333,429,998
Expenses
Voyage expenses	4,324,712	3,409,650	3,242,923
Charter hire expenses	16,265,638	18,135,580	9,861,898
Vessel operating expenses	74,204,218	78,219,869	71,478,369
Depreciation and amortization	66,432,115	68,462,476	66,262,530
General and administrative expenses	30,226,739	33,890,999	23,355,768
Total expenses	191,453,422	202,118,574	174,201,488
Gain on disposal of vessels	7,256,897
Other income-related parties	2,374,050	2,279,454	1,840,321
Operating income	92,398,973	116,099,692	161,068,831
Other income/(expenses)
Interest and finance costs	(27,067,395)	(27,596,124)	(36,105,541)
Interest income	347,082	421,464	1,458,725
Unrealized gain/(loss) on derivatives	11,067,870	7,202,880	(18,206,769)
Realized gain/(loss) on derivatives	(3,450,443)	(4,568,033)	2,800,374
Other gain/(loss), net	(1,361,069)	1,004,774	825,638
Total other income/(expenses), net	(20,463,955)	(23,535,039)	(49,227,573)
Net income	$ 71,935,018	$ 92,564,653	$ 111,841,258
Weighted average shares outstanding Basic (in shares)	40,203,937	49,729,358	53,881,483
Weighted average shares outstanding Diluted (in shares)	40,365,088	49,826,798	54,115,338
Earnings per common share - basic (in dollars per share)	$ 1.79	$ 1.86	$ 2.08
Earnings per common share - diluted (in dollars per share)	$ 1.78	$ 1.86	$ 2.07
Net pool revenues - related party
Revenues.
Revenues	$ 246,305,480	$ 292,679,614	$ 298,079,123
Time charter revenues
Revenues.
Revenues	22,377,211	19,492,595	34,111,230
Other revenue, net
Revenues.
Revenues	$ 5,538,757	$ 3,766,603	$ 1,239,645