Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2013	Feb. 28, 2013
Inventory [Line Items]
Raw materials	$ 12,922	$ 13,632
Work-in-process	2,846	3,734
Finished goods	5,871	7,022
Inventory, Gross	21,639	24,388
Reserves for obsolescence	(3,216)	(2,779)
Inventory, Net	$ 18,423	$ 21,609

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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