Note 16 - Income Taxes - Components of Income Tax Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Federal			$ 0	$ 0
State			1,500	1,000
Total			1,500	1,000
Federal			0	0
State			0	0
Total			0	0
Total provision for income taxes	$ 0	$ 500	$ 1,500	$ 1,000