Voyage Expenses (Details) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Voyage Expenses.
Bunkers	$ 2,159,341	$ 1,537,007	$ 1,345,360
War risk insurances	1,510,720	1,272,647	1,095,156
Brokers' commissions	265,207	334,333	469,143
Security cost	322,150	221,882	272,985
Port charges and other related expenses	1,556	1,500	5,898
Other voyage expenses	65,738	42,281	54,381
Total voyage expenses	$ 4,324,712	$ 3,409,650	$ 3,242,923