Note 12 - Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Current:
Federal	$ 0	$ 0
State	(4,190)	(19,818)
Total	(4,190)	(19,818)
Deferred
Federal	93,383	714,194
State	31,617	241,806
Total	125,000	956,000
Total benefit provision for income taxes	$ 120,810	$ 936,182