Note 3 - Property and Equipment (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Depreciation	$ 6,000	$ 66,000	$ 32,000	$ 100,000
Internally Developed Software [Member]
Inventory Write-down			$ 900,000