Note 6 - STOCK-BASED COMPENSATION (Details) - USD ($)	3 Months Ended	12 Months Ended
May 31, 2019	Feb. 28, 2019
2002 Plan [Member]
Note 6 - STOCK-BASED COMPENSATION (Details) [Line Items]
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding	10,000
The 2019 Long-term Incentive Plan [Member]
Note 6 - STOCK-BASED COMPENSATION (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	600,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture	308,000
Shares Issued, Price Per Share	$ 9.94
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 166,300	$ 401,800
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	$ 2,494,200
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	45 months

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Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Number of shares authorized for issuance under share-based payment arrangement.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Per share or per unit amount of equity securities issued.

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Number, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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