Note 12 - Income Taxes - Provision for Income Taxes (Details) - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Book income at federal statutory rate, 21%	$ (187,217)	$ 10,660
Book income at federal statutory rate, 21%, percent	21.00%	21.00%
State Adjustments	$ (29,220)
State Adjustments, percent	5.08%
State Capital Taxes	$ 1,580	$ 1,580
State Capital Taxes, percent	(0.27%)	3.11%
State taxes, net of federal benefit	$ (59,957)	$ 5,115
State taxes, net of federal benefit, percent	6.86%	10.08%
Permanent Items	$ 4,174	$ 4,449
Permanent Items, percent	(0.73%)	8.76%
Prior Year Tax Receivable True-Up		$ (6,190)
Prior Year Tax Receivable True-Up, percent		(12.19%)
Prior Year Deferred Tax Asset/(L) True Up	$ (172,863)	$ 27,987
Prior Year Deferred Tax Asset/(L) True Up, percent	30.08%	55.14%
Valuation Allowance	$ 485,995	$ 108,986
Valuation Allowance, percent	(69.76%)	214.71%
Federal research & development credit generated	$ (42,492)	$ (31,776)
Federal research & development credit generated, percent	7.39%	(62.60%)
Total benefit (provision) for income taxes	$ 0	$ 120,810
Effective Income Tax Rate Reconciliation, Percent	(0.35%)	238.00%