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v3.21.2

Commitments and Contingencies (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | ---
Commitments and Contingencies |  |
Letters of Credit Outstanding, Amount | $ 8.5 | $ 9.9
Non-binding And Revocable Commitment | $ 10.0 |

X
- Definition The amount of non-binding and revocable commitment. + References No definition available. + Details
Name: | ese_NonBindingAndRevocableCommitment
Namespace Prefix: | ese_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant