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Retirement And Other Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified | Sep. 30, 2013 | Sep. 30, 2012
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Defined Benefit Plan Before Adoption Of SFAS 158 Recognition Provision Accrued Benefit Liability | $ 0.7 | $ 0.8

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- Definition Disclosure under FAS 132R, before it was amended by FAS 158, of the accrued benefit liability, if any, as one of the amounts recognized in the balance sheet prior to the adoption of the recognition provisions of FAS 158. + References No definition available. + Details
Name: | ese_DefinedBenefitPlanBeforeAdoptionOfSfas158RecognitionProvisionAccruedBenefitLiability
Namespace Prefix: | ese_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant