Note 13 - Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Federal	$ 150	$ 62
Foreign	94	129
Total current	244	191
Federal	56	(54)
Foreign	9	78
Total deferred	65	24
Income tax expense	$ 309	$ 215