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Supplemental Consolidating Financial Statements (Details) (USD $)
0 Months Ended
Dec. 12, 2012
Jul. 27, 2013
Jul. 28, 2012
Debt Instrument [Line Items]      
Debt and capital lease obligations   $ 451,982,000 $ 187,574,000
7.125% Senior Subordinated Notes Due 2021 | Senior Subordinated Notes
     
Debt Instrument [Line Items]      
Debt and capital lease obligations   277,500,000 187,500,000
Proceeds from issuance of long-term debt $ 90,000,000