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Composition of Certain Balance Sheet Accounts (Details 1) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2013	Feb. 29, 2012
Composition of inventories
Raw materials	$ 2,560	$ 1,419
Work in process	2,294	2,424
Finished goods	2,286	2,790
Inventory, total	$ 7,140	$ 6,633

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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