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Sale and Closure of Company Owned Stores - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 30, 2012
Store
Jan. 01, 2012
Store
Jan. 02, 2011
Store
Sales Concentration [Line Items]      
Number of company-owned stores sold 6 58 11
Pre-tax gain on sale of assets, net of goodwill reduction, charged to general and administrative expenses   $ 2,200,000 $ 200,000
Reduction of goodwill related to sale of stores 100,000 700,000 200,000
Other related expense   $ 315,000