Revenues (Details) - USD ($)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Revenues	$ 333,429,998	$ 158,032,485
Net pool revenues - related party
Revenues	298,079,123	120,015,771
Time charter revenues
Revenues	34,111,230	37,726,214
Other revenues, net
Revenues	$ 1,239,645	$ 290,500
Revenue Guidance in Effect before Topic 606
Revenues			$ 159,334,760
Revenue Guidance in Effect before Topic 606 | Net pool revenues - related party
Revenues			106,958,576
Revenue Guidance in Effect before Topic 606 | Time charter revenues
Revenues			50,176,166
Revenue Guidance in Effect before Topic 606 | Voyage charter revenues
Revenues			2,068,491
Revenue Guidance in Effect before Topic 606 | Other revenues, net
Revenues			$ 131,527