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Pension Plan - Pension Plan's Fair Value Hierarchy for Assets Measured at Fair Value (Detail) - USD ($) $ in Thousands | Feb. 28, 2023 | Feb. 28, 2022 | Feb. 28, 2021
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | $ 49,242 | $ 59,023 | $ 59,719
Cash and Cash Equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 2,093 | 2,172 |
Government Bonds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 9,793 | 8,623 |
Corporate Bonds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 15,797 | 14,941 |
Domestic Equities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 16,833 | 26,582 |
Foreign Equities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 4,726 | 6,705 |
Level 1 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 23,652 | 35,459 |
Level 1 [Member] | Cash and Cash Equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 2,093 | 2,172 |
Level 1 [Member] | Domestic Equities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 16,833 | 26,582 |
Level 1 [Member] | Foreign Equities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 4,726 | 6,705 |
Level 2 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 25,590 | 23,564 |
Level 2 [Member] | Government Bonds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 9,793 | 8,623 |
Level 2 [Member] | Corporate Bonds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | $ 15,797 | $ 14,941 |

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