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Property, Plant and Equipment (Depreciation Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Property, Plant and Equipment [Abstract]
Depreciation	$ 31,575	$ 25,672	$ 26,104

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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