Inventories (Details) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 28, 2013
Inventories [Abstract]
Raw materials and supplies	$ 53,948	$ 54,613
Work-in-process	60,893	43,796
Finished goods	181,407	159,422
Valuation reserves	(5,110)	(6,115)
Inventories	$ 291,138	$ 251,716

Certain changes made in the current period to the value and amount of inventory reported.

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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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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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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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