SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES UPDATE- Revenue Recognition (Details)	9 Months Ended
Jun. 30, 2019
Filtration
Percentage of segment revenues recognized when services are performed or when products are delivered	48.00%
Percentage of consolidated revenues recognized when services are performed or when products are delivered	18.00%
Percentage of segment revenues recorded over time	52.00%
Percentage of consolidate revenues recorded over time	19.00%
Test
Percentage of segment revenues recognized when services are performed or when products are delivered	25.00%
Percentage of consolidated revenues recognized when services are performed or when products are delivered	6.00%
Percentage of segment revenues recorded over time	75.00%
Percentage of consolidate revenues recorded over time	17.00%
USG
Percentage of segment revenues recognized when services are performed or when products are delivered	80.00%
Percentage of consolidated revenues recognized when services are performed or when products are delivered	24.00%
Percentage of segment revenues recorded over time	20.00%
Percentage of consolidate revenues recorded over time	6.00%
Percentage of segment revenues based on software contracts	8.00%
Percentage of consolidate revenues based on software contracts	2.00%
Technical Packaging
Percentage of segment revenues recorded over time	100.00%
Percentage of consolidate revenues recorded over time	10.00%

The percentage of consolidated revenues recognized based on software contracts.

No definition available.

Name:	ese_PercentageOfConsolidatedRevenuesRecognizedBasedOnSoftwareContracts
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The percentage of consolidated revenues recognized over time based on costs or services performed plus reasonable amount of margin.

No definition available.

Name:	ese_PercentageOfConsolidatedRevenuesRecognizedOverTimeCostsIncurredPlusMargin
Namespace Prefix:	ese_
Data Type:	num:percentItemType
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Period Type:	instant

The percentage of segment revenues recognized based on software contracts.

No definition available.

Name:	ese_PercentageOfSegmentRevenuesRecognizedBasedOnSoftwareContracts
Namespace Prefix:	ese_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The percentage of segment revenues recognized over time based on costs or services performed plus reasonable amount of margin.

No definition available.

Name:	ese_PercentageOfSegmentRevenuesRecognizedOverTimeCostsIncurredPlusMargin
Namespace Prefix:	ese_
Data Type:	num:percentItemType
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Percentage of revenues recognized when services are performed for unaffiliated customers or when products are delivered.

No definition available.

Name:	ese_Percentageofrevenuesrecognizedwhenservicesareperformedforunaffiliatedcustomersorwhenproductsaredelivered
Namespace Prefix:	ese_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of segment revenues recognized when services are performed for unaffiliated customers or when products are delivered.

No definition available.

Name:	ese_Percentageofsegmentrevenuesrecognizedwhenservicesareperformedforunaffiliatedcustomersorwhenproductsaredelivered
Namespace Prefix:	ese_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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Data Type:	na
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Name:	us-gaap_StatementBusinessSegmentsAxis=ese_UtilitySolutionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_StatementBusinessSegmentsAxis=ese_TechnicalPackagingMember
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Data Type:	na
Balance Type:
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