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Goodwill and Other Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 01, 2014	Mar. 26, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 4.2	$ 3.6

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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