Commitments and Contingencies (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Operating Leases
Operating lease rent expense	$ 97,382	$ 110,601	$ 311,932	$ 316,623
Commitments under Operating Leases
Less than one year	174,676		174,676
One to three years	67,812		67,812
Total	242,488		242,488
Fixed time charter
Fixed Time Charter Contracts
Less than one year	40,093,114		40,093,114
One to three years	33,806,365		33,806,365
Total	$ 73,899,479		$ 73,899,479