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Inventories (Details) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Inventory Disclosure [Abstract]
Raw materials	$ 36,680	$ 29,770
Work-in-progress	10,731	8,580
Finished goods and purchased products	104,694	77,303
Inventory, net	$ 152,105	$ 115,653

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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