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Fair Value Measurements (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Jan. 01, 2011
Jan. 02, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property, plant and equipment-net $ 282,050,000 $ 217,424,000  
Impairment charge 957,000 7,429,000 5,232,000
Specific Company-Owned Stores-Net [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property, plant and equipment-net 1,000,000 2,100,000  
Impairment charge 1,000,000 1,800,000  
Estimated insurance proceeds   300,000  
Property, plant and equipment - net, fair value 100,000    
Specific Company-Owned Office-Net [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property, plant and equipment-net   12,600,000  
Impairment charge   3,700,000  
Property, plant and equipment - net, fair value   $ 8,900,000