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Income Taxes - Additional Information (Detail)
4 Months Ended 3 Months Ended
Apr. 25, 2015
Apr. 19, 2015
Income Taxes [Line Items]    
Effective tax rate 35.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 35.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations