Roll Forward of Inventory Reserves (Detail) (Inventory Valuation Reserve, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Inventory Valuation Reserve
Inventory [Line Items]
Balance at Beginning of Period	$ 2,679	$ 2,391
Additions: Charged to Costs and Expenses	658	685
Deductions	3,226	397
Balance at End of Period	$ 111	$ 2,679