Intangible Assets (Narrative) (Details) (USD $)
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12 Months Ended | |
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Dec. 30, 2011
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Dec. 28, 2012
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Finite-Lived Intangible Assets [Line Items] | ||
Contingent Liability From Intangible Asset Purchase | $ 3,000,000 | |
Weighted Average Amortization Period Purchased Assets | 11 years | |
Goodwill, Impaired, Accumulated Impairment Loss | 0 | |
Purchased Technology And Patents [Member]
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Finite-Lived Intangible Assets [Line Items] | ||
Purchase of technology and patents | $ 6,300,000 |