Stock Option Plan and Stock Based Compensation - Summary of Restricted Stock Awards Activity (Detail) - Restricted Stock [Member] - $ / shares	12 Months Ended
Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2023
Restricted stock grant activity
Outstanding at Beginning, Number of Shares	42,131	49,783	67,164
Number of Shares, Granted	19,880	21,672	22,000
Number of Shares, Terminated	0	0	0
Number of Shares, Vested	(20,344)	(29,324)	(39,381)
Outstanding at Ending, Number of Shares	41,667	42,131	49,783
Outstanding at Beginning, Weighted Average Grant Date Fair value	$ 20.11	$ 18.99	$ 18.73
Weighted Average Grant Date Fair Value, Granted	23.24	20.31	19.78
Weighted Average Grant Date Fair Value, Terminated	0	0	0
Weighted Average Grant Date Fair Value, Vested	20.08	18.36	19
Outstanding at Ending, Weighted Average Grant Date Fair value	$ 21.61	$ 20.11	$ 18.99

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

+ Details

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- Definition

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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+ Details

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- Definition

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).

+ References

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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+ Details

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- Definition

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

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+ Details

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

+ Details

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