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Goodwill and Intangible Assets Amortization Expense (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Jun. 29, 2013
Finite-Lived Intangible Assets [Line Items]        
Amortization of Intangible Assets $ 0.2 $ 0.3 $ 0.4 $ 0.4