Represents term of cumulative basis connection with performance for certain revenue thresholds.

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The total fair value amount at grant date for nonvested equity-based awards issued during the period.

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Additional Amount of stock repurchase plan authorized.

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The expiration term of warrants after final determination of thresholds.

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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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Aggregate dividends paid during the period for each share of common stock outstanding.

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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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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 equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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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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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Note 10 - Stockholders' Equity (Details Textual) - USD ($)								3 Months Ended		9 Months Ended
	Oct. 15, 2020	Mar. 13, 2020	Dec. 20, 2019	Dec. 06, 2019	Sep. 13, 2019	Jun. 14, 2019	Mar. 15, 2019	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2020	Nov. 30, 2019	May 21, 2015	Jan. 13, 2015	Jul. 15, 2014
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share)		$ 0.12		$ 0.12	$ 0.12	$ 0.12	$ 0.12
Stock Repurchase Program, Authorized Amount														$ 3,000,000
Stock Repurchase Program, Additional Authorized Amount												$ 2,090,000	$ 2,058,000
Treasury Stock, Shares, Acquired (in shares)								0		0
Stock Repurchase Program, Remaining Authorized Repurchase Amount								$ 638,000		$ 638,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)	300,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	320,668
Share-based Payment Arrangement, Expense								$ 112,199	$ 116,540	$ 399,636	$ 503,210
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)								0		0
Restricted Stock [Member]
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares)										0	5,168
Unrestricted Shares of Stock [Member]
Share-based Payment Arrangement, Expense										$ 0	$ 48,774
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Expense								$ 112,199		$ 399,636
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)										51,393	32,002
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value, Amount										$ 1,726,339
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)										3 years 335 days
Maximum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)										6 years
Minimum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)										5 years
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)			180 days
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