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The aggregate fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The aggregate grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The target percentage of performance shares issuable pursuant to the share-based compensation arrangement.

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No definition available.

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The expiration term of warrants after final determination of thresholds.

+ References

No definition available.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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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 nonvested award under share-based payment arrangement. Excludes share and unit options.

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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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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Percentage of vesting of award under share-based payment arrangement.

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

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Note 9 - Stockholders' Equity (Details Textual) - USD ($)		3 Months Ended
	Dec. 20, 2019	May 31, 2022	May 31, 2021
Share-Based Payment Arrangement, Expense		$ 131,597	$ 146,157
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		27,668
Restricted Stock Units and Stock Options [Member]
Share-Based Payment Arrangement, Expense		$ 131,597	$ 111,507
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		55,336	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)		$ 6.65	$ 9.40
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount		$ 865,549
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		2 years 4 months 9 days
Chief Executive Officer [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		27,668
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Aggregate Grant Date Fair Value		$ 58,213
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)		$ 2.10
Chief Executive Officer [Member] \| Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		27,668
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Aggregate Grant Date Fair Value		$ 168,304
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)		$ 6.08
Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Shares, Targert Number, Percentage		12.50%
Chief Executive Officer [Member] \| Performance Shares [Member] \| Vesting on Last Day of Current Fiscal Year Ending [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage		33.33%
Chief Executive Officer [Member] \| Performance Shares [Member] \| Vesting on Last Day of Each Quarter Thereafter [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage		33.33%
Share-Based Payment Arrangement, Nonemployee [Member]
Share-Based Payment Arrangement, Expense		$ 0	$ 34,650
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture, Total (in shares)		0	7,000
Maximum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)		6 years
Maximum [Member] \| Chief Executive Officer [Member] \| Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		55,336
Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Shares, Targert Number, Percentage		200.00%
Minimum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)		5 years
Minimum [Member] \| Chief Executive Officer [Member] \| Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Shares, Targert Number, Percentage		0.00%
Warrant to Purchase Common Stock [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 8.76
Certain Revenue Thresholds, Cumulative Basis Connection with Performance Basis (Year)	5 years
Warrants and Rights Outstanding, Term (Month)	6 months
Warrant to Purchase Common Stock [Member] \| Maximum [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	960,677