Note 12 - Disaggregation of Revenues and Major Customers - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details) - USD ($)	12 Months Ended
Feb. 28, 2026	Feb. 28, 2025
Net sales	$ 16,970,000	$ 14,049,000
Europe and Australia [Member]
Net sales	928,000	47,000
Canada and Latin America [Member]
Net sales	0	31,000
UNITED STATES
Net sales	$ 16,042,000	$ 13,971,000

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