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Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets (Detail) (Pension Plans, Defined Benefit, USD $) In Thousands, unless otherwise specified	Feb. 28, 2013	Feb. 29, 2012
Pension Plans, Defined Benefit
Plans with Accumulated Benefit Obligation in excess of Plan Assets
Accumulated Benefit Obligation	$ 15,551	$ 15,964

If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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