Inventories (Details) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw materials	$ 8,674	$ 12,447
Work in process	91,660	88,643
Finished goods	33,964	51,631
Total inventories	$ 134,298	$ 152,721

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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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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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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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