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Sale of Company-Owned Stores - Additional Information (Detail) - Mar. 23, 2014
$ in Millions
USD ($)
Store
Restructuring And Related Activities [Abstract]  
Number of company-owned stores sold | Store 14
Pre-tax gain on sale of assets, net of goodwill reduction, charged to general and administrative expenses $ 1.7
Reduction of goodwill related to sale of stores 0.5
Deferred tax valuation allowance $ 0.3