Note 1 - Organization and Basis of Presentation (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	May 14, 2024
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	$ 7,142,000	$ 8,649,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(13,311,000)	$ (10,019,000)
Working Capital	(22,500,000)
Potential Financing Amount	$ 150,000,000
Subsequent Event [Member] | Roth Capital [Member]
Sale of Stocks, Maximum Amount Authorized to Sell			$ 25,000,000