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Earnings Per Share - Additional Information (Detail)
4 Months Ended
Apr. 25, 2015
Apr. 19, 2014
Computation of Earnings Per Share [Line Items]    
Antidilutive Shares excluded from Computation of Earnings Per Share 0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount