Contractual maturities of marketable securities (Details) - USD ($)	Sep. 30, 2023	Mar. 31, 2023
Schedule of Investments [Line Items]
Marketable Securities	$ 53,700,402	$ 52,544,283
(1 Year	14,077,103
1-3 Years	27,387,122
3-6 Years	12,236,177
Money Market Funds [Member]
Schedule of Investments [Line Items]
Marketable Securities	6,853,047	906,141
(1 Year	6,853,047
1-3 Years
3-6 Years
Corporate Bond Securities [Member]
Schedule of Investments [Line Items]
Marketable Securities	46,847,355	$ 51,638,142
(1 Year	7,224,056
1-3 Years	27,387,122
3-6 Years	$ 12,236,177