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Inventories - Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 27, 2012	Jul. 31, 2012
Schedule Of Inventory [Line Items]
Raw materials	$ 3,308	$ 3,462
Work in process	820	1,082
Finished goods	4,708	3,925
Total	$ 8,836	$ 8,469

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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