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Commitments and Contingencies (Details) (USD $)
6 Months Ended
Jun. 29, 2013
Apr. 01, 2013
Mar. 30, 2013
Dec. 29, 2012
Jun. 30, 2012
Information about Litigation Matters          
Number Of Vendors Company Purchased Engines 1        
Letters of Credit          
Letter of credit outstanding outside of the Senior credit facility $ 18,300,000 $ 18,300,000 $ 8,400,000    
Restricted cash 0   8,400,000 8,400,000 8,800,000
SSC Construction Projects [Member]
         
Construction Commitments          
Property and construction commitments 45,300,000        
Letters Of Credit [Member]
         
Letters of Credit          
Letters of Credit Outstanding, Amount $ 73,900,000