Note 4 - Property and Equipment (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement [Line Items]
Depreciation	$ 800	$ 300
Property, Plant and Equipment, Disposals	211,000	$ 0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$ 0