Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Narrative) (Detail)

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Fair Value of Financial Instruments (Narrative) (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 23, 2012
Dec. 25, 2011
Fair Value Measurements Of Financial Instruments [Line Items]    
Long-term debt $ 4,994 $ 55,200
Fair Value, Level 2 Inputs [Member]
   
Fair Value Measurements Of Financial Instruments [Line Items]    
Long-term debt $ 4,994 $ 55,200