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Fair Value Measurements - Schedule of Estimated Fair Value and Book Value of Debt Instruments (Detail) (USD $)
In Thousands, unless otherwise specified
Jul. 12, 2014
Dec. 28, 2013
Book value of debt instruments:    
Current maturities of long-term debt and capital lease obligations $ 7,189 $ 7,345
Long-term debt and capital lease obligations 576,474 598,319
Total book value of debt instruments 583,663 605,664
Fair value of debt instruments 587,898 609,682
Excess of fair value over book value $ 4,235 $ 4,018