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Pension Plan - Additional Information (Detail) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2025 | Feb. 28, 2026 | Feb. 28, 2025
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employees covered under noncontributory Pension Plan | 12.00% |  |
Compensation period preceding retirement and termination | 5 years |  |
Period used for calculating Pension Plan liability | 25 years |  |
Contribution to avoid a Pension Benefit Guaranty Corporation variable premium |  |  | $ 1.2
Unfunded pension liability | $ 1.4 |  |
Minimum [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected contributions | 1.0 |  |
Maximum [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected contributions | $ 3.0 |  |
Scenario Forecast [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Contribution to avoid a Pension Benefit Guaranty Corporation variable premium |  | $ 0.0 |

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