Note 6 - Disaggregation of Revenue and Major Customers - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details) - USD ($)	3 Months Ended
May 31, 2026	May 31, 2025
Net sales	$ 5,436,000	$ 2,700,000
Europe and Australia [Member]
Net sales	249,000	33,000
Canada and Latin America [Member]
Net sales	0	0
Far East and Middle East [Member]
Net sales	0	11,000
UNITED STATES
Net sales	$ 5,187,000	$ 2,656,000

Amount, including 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