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Stock Activity Related to Restricted Stock Units Vested (Detail) (Restricted Stock Units (RSUs), USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Oct. 31, 2014
Oct. 25, 2013
Restricted Stock Units (RSUs)
    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Tax benefits related to restricted stock units vested $ 198esl_TaxBenefitsRelatedToRestrictedStockUnitsVested
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RestrictedStockUnitsRSUMember		 $ 0esl_TaxBenefitsRelatedToRestrictedStockUnitsVested
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RestrictedStockUnitsRSUMember
Intrinsic value of restricted stock units vested $ 3,153us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RestrictedStockUnitsRSUMember		 $ 0us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RestrictedStockUnitsRSUMember