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Fair Value of Financial Instruments (Details) (USD $)
 12 Months Ended
Dec. 26, 2012
Dec. 28, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book value of senior secured term loans and capital lease obligations $ 190,134,000 $ 220,556,000
Recurring [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total 6,379,000 4,935,000
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total 6,371,000 4,935,000
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total 8,000 0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total 0 0
Recurring [Member] | Investments [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Deferred compensation plan investments 6,371,000 4,935,000
Valuation Technique market approach market approach
Recurring [Member] | Investments [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Deferred compensation plan investments 6,371,000 4,935,000
Recurring [Member] | Investments [Member] | Significant Other Observable Inputs (Level 2) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Deferred compensation plan investments 0 0
Recurring [Member] | Investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Deferred compensation plan investments 0 0
Recurring [Member] | Interest Rate Cap [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate caps 8,000  
Valuation Technique income approach  
Recurring [Member] | Interest Rate Cap [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate caps 0  
Recurring [Member] | Interest Rate Cap [Member] | Significant Other Observable Inputs (Level 2) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate caps 8,000  
Recurring [Member] | Interest Rate Cap [Member] | Significant Unobservable Inputs (Level 3) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate caps 0  
Nonrecurring [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Valuation Technique income approach income approach
Impaired assets related to underperforming and closed units 200,000 0
Estimated Fair Value [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Estimated fair value of senior secured term loan and capital lease obligations   220,100,000
Carrying (Reported) Amount [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Book value of senior secured term loans and capital lease obligations   $ 220,600,000