Commitments and Contingencies (Tables)

6 Months Ended

Sep. 30, 2019

Commitments and Contingencies

Schedule of future minimum scrubber purchases commitments

	September 30, 2019
Less than one year	$	8,810,894
Total	$	8,810,894

Schedule of commitments under contracts for BWMS Purchases

	September 30, 2019
Less than one year	$	367,712
Total	$	367,712

Schedule of operating lease rent expense

	Three months ended				Six months ended
	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Operating lease rent expense	$	127,664	$	106,117	$	250,016	$	233,599

Schedule of operating leases

	September 30, 2019
Less than one year	$	502,064
One to three years		507,450
Total	$	1,009,514

Schedule of time charter-in expenses

	Three months ended				Six months ended
	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Charter hire expenses	$	2,055,000	$	—	$	4,110,000	$	—

Schedule of future minimum time charter-in commitments

	September 30, 2019
Less than one year	$	8,325,000
One to three years		3,500,000
Total	$	11,825,000

Schedule of future minimum fixed time charter contracts

	September 30, 2019
Less than one year	$	30,685,613
One to three years		36,640,752
Three to five years		815,000
Total	$	68,141,365