Note 2 - Going Concern and Management's Plan (Details Textual) - USD ($)	3 Months Ended
Aug. 31, 2026	Aug. 31, 2025	May 31, 2026
Retained Earnings (Accumulated Deficit)	$ (38,427,630)		$ (35,868,635)
Cash	360,533		$ 511,915
Revenue from Contract with Customer, Excluding Assessed Tax	5,321,088	$ 10,732,573
Major Customer Lost [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 30,000,000
Major Customer Lost [Member] \| Customer Concentration Risk [Member] \| Revenue Benchmark [Member]
Concentration Risk, Percentage	55.00%
Approximately [Member]
Retained Earnings (Accumulated Deficit)	$ (38,427,630)

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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+ Details

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References + Details

- Definition

Amount of accumulated undistributed earnings (deficit).

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+ Details

- Definition

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