Note 11 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Income Tax Expense (Benefit)	$ 0	$ 0	$ 0	$ 2,000
Unrecognized Tax Benefits	$ 0		$ 0
Effective Income Tax Rate Reconciliation, Percent			0.00%	(0.10%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%