Significant Accounting Policies (AcctPro) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019	Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle
Lease, Practical Expedient, Lessor Single Lease Component	false
Amount of voyage charter arrangements in progress			$ 0	$ 0
Lease, Practical Expedients, Package [true false]	true
Operating lease right-of-use assets	$ 26,861,551
Operating lease liability	$ 26,864,528
Adjustment | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle
Operating lease right-of-use assets		$ 1,200,000
Operating lease liability		$ 1,200,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle
The standard payment period terms of freight paid	3 days
Maximum
New Accounting Pronouncements or Change in Accounting Principle
The standard payment period terms of freight paid	5 days