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Intangible Assets Narrative (Details) (USD $)
3 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Dec. 29, 2012
Goodwill [Line Items]      
Intangible assets, net $ 73,637,000   $ 75,663,000
Amortization of intangible assets 2,100,000 2,100,000  
Amortization in 2013     8,000,000
Amortization in 2014     7,000,000
Amortization of 2015     7,000,000
Amortization of 2016     7,000,000
Amortization of 2017     7,000,000
Interest Expense
     
Goodwill [Line Items]      
Amortization of intangible assets $ 600,000 $ 700,000