Commitments and Contingencies (Tables)

12 Months Ended

Mar. 31, 2019

Commitments and Contingencies

Schedule of future minimum scrubber purchases commitments

	March 31, 2019
Less than one year	$	9,785,394
One to three years		231,722
Three to five years		897,395
Total	$	10,914,511

Schedule of commitments under contracts for BWMS Purchases

	March 31, 2019
Less than one year	$	1,004,800
Total	$	1,004,800

Schedule of operating lease rent expense

	Year ended
	March 31, 2019		March 31, 2018		March 31, 2017
Operating lease rent expense	$	471,425	$	426,155	$	415,928

Schedule of operating leases

	March 31, 2019
Less than one year	$	422,604
One to three years		485,120
Three to five years		12,413
Total	$	920,137

Schedule of time charter-in expenses

	Year ended
	March 31, 2019		March 31, 2018		March 31, 2017
Charter hire expenses	$	237,525	$	—	$	—

Schedule of future minimum time charter-in commitments

	March 31, 2019
Less than one year	$	7,535,000
Total	$	7,535,000

Schedule of future minimum fixed time charter contracts

	March 31, 2019
Less than one year	$	29,100,613
One to three years		27,505,752
Total	$	56,606,365