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Financial Statement Policies (Fair Value Hierarchy Of Assets And Liabilities Measured At Fair Value On A Nonrecurring Basis) (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Specific Company-owned stores-net $ 0  
Impairment losses (256) 0
Fair Value, Inputs, Level 1 [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Specific Company-owned stores-net 0  
Fair Value, Inputs, Level 2 [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Specific Company-owned stores-net 0  
Fair Value, Inputs, Level 3 [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Specific Company-owned stores-net $ 0