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Summary of Significant Accounting Policies - Fair Value Assets Measured on a Nonrecurring Basis (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 28, 2015
Dec. 27, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Goodwill $ 48,751us-gaap_Goodwill $ 48,751us-gaap_Goodwill
Finite-Lived Intangible Assets, Gross 27,000us-gaap_FiniteLivedIntangibleAssetsGross 31,500us-gaap_FiniteLivedIntangibleAssetsGross
Finite-Lived Intangible Assets, Net $ 18,274us-gaap_FiniteLivedIntangibleAssetsNet $ 19,146us-gaap_FiniteLivedIntangibleAssetsNet