Stock Option Plan and Stock Based Compensation - Summary of Stock Option Activity (Detail) - USD ($)	12 Months Ended
Feb. 28, 2026	Feb. 28, 2025	Feb. 29, 2024
Share-Based Payment Arrangement [Abstract]
Number of Shares, Options Outstanding, Beginning Balance	31,251	52,500
Number of Shares, Granted	10,809	0
Number of Shares, Forfeited/Terminated	0	(12,500)
Number of Shares, Exercised	(2,500)	(8,749)
Number of Shares, Options Outstanding, Ending Balance	39,560	31,251	52,500
Number of Shares, Exercisable	26,222
Weighted Average Exercise Price, Beginning Balance	$ 19.88	$ 19.88
Weighted Average Exercise Price, Granted	17.27
Weighted Average Exercise Price, Forfeited/Terminated	0	0
Weighted Average Exercise Price, Exercised	17.27	0
Weighted Average Exercise Price, Ending Balance	19.33	$ 19.88	$ 19.88
Weighted Average Exercise Price, Exercisable	$ 19.05
Weighted Average Remaining Contractual Life (in years)	7 years 7 months 6 days	8 years 1 month 6 days	9 years 1 month 6 days
Weighted Average Remaining Contractual Life (in years), Exercisable	7 years 9 months 18 days
Aggregate intrinsic value, Outstanding	$ 70,300	$ 41,300	$ 23,000
Aggregate Intrinsic Value, Exercisable	$ 53,900

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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