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Pension Plan - Plan's Fair Value Hierarchy for Assets Measured at Fair Value (Detail) - USD ($) $ in Thousands | Feb. 29, 2016 | Feb. 28, 2015 | Feb. 28, 2014
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | $ 47,547 | $ 50,993 | $ 49,423
Cash and Cash Equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 3,576 | 4,262 |
Government Bonds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 10,887 | 10,642 |
Corporate Bonds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 7,134 | 8,154 |
Domestic Equities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 20,226 | 21,974 |
Foreign Equities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 5,724 | 5,961 |
Level 1 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 29,526 | 32,197 |
Level 1 [Member] | Cash and Cash Equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 3,576 | 4,262 |
Level 1 [Member] | Domestic Equities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 20,226 | 21,974 |
Level 1 [Member] | Foreign Equities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 5,724 | 5,961 |
Level 2 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 18,021 | 18,796 |
Level 2 [Member] | Government Bonds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | 10,887 | 10,642 |
Level 2 [Member] | Corporate Bonds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair Value Measurements | $ 7,134 | $ 8,154 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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