Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Mar. 31, 2025
Income Tax Expense (Benefit)	$ 8	$ 103	$ 27	$ (25)
Income Tax Expense Increase (Decrease)	$ (95)		$ 52
Effective Income Tax Rate Reconciliation, Percent	(0.94%)	(9.00%)	(1.74%)	0.38%
Domestic Tax Jurisdiction [Member]
Operating Loss Carryforwards					$ 70,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards					$ 61,000