Note 13 - Geographic Information - Schedule of Geographic Information (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Revenue	$ 6,310	$ 10,785
Long-lived assets	509	736
UNITED STATES
Revenue	6,310	10,458
Long-lived assets	183	272
Non-US [Member]
Revenue	0	327
Long-lived assets	$ 326	$ 464

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details