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Summary of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Oct. 02, 2011
Schedule of Inventory [Line Items]
Raw materials	$ 40,639	$ 40,454
Work in process	75,912	65,190
Finished goods	38,997	35,183
Inventories	$ 155,548	$ 140,827

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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