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Intangible Assets Intangible Assets - Additional Information (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Goodwill and Intangible Assets Disclosure [Abstract]    
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 10 years  
Amortization of Intangible Assets $ 1.2us-gaap_AmortizationOfIntangibleAssets $ 0.8us-gaap_AmortizationOfIntangibleAssets