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Year-to-Date Activity in Restructuring Reserve (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve as of February 29, 2012	$ 235
Restructuring Expenses Recorded During Fiscal 2013		345
Cash Payments and Other Adjustments	$ (235)

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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