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Accrued Expenses (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Jan. 01, 2012
Summary of accrued expenses    
Payroll and related expense $ 18,886 $ 19,691
Occupancy costs 10,343 8,722
Sales tax 6,974 9,235
Income taxes payable 5,167  
Advertising 3,701 7,685
Other 15,814 17,214
Accrued expenses $ 60,885 $ 62,547