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UNCOMPLETED CONTRACTS - Summary of costs, estimated earnings, and billings on uncompleted contracts (Details) - USD ($)	Sep. 30, 2025	Sep. 30, 2024
UNCOMPLETED CONTRACTS
Costs incurred on contracts in progress	$ 471,208,654	$ 347,180,901
Estimated earnings, net of estimated losses	71,159,322	59,349,378
Costs of uncompleted contracts including net estimated earnings	542,367,976	406,530,279
Less billings to date	536,231,730	398,885,475
Unbilled contracts	6,136,246	7,644,804
Costs and estimated earnings in excess of billed on uncompleted contracts	34,455,011	24,595,792
Less billings in excess of costs and estimated earnings on uncompleted contracts	28,318,765	16,950,988
Unbilled contracts receivable	$ 6,136,246	$ 7,644,804

X

- Definition

Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date.

+ References

No definition available.

+ Details

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X

- Definition

The amount of the Costs incurred on contracts in progress during the given period of time.

+ References

No definition available.

+ Details

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- Definition

Amount of contract with customer assets, after allowance, net of contract with customer liabilities, after allowances, classified as current.

+ References

No definition available.

+ Details

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Namespace Prefix:	esoa_
Data Type:	xbrli:monetaryItemType
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X

- Definition

The total amount of the costs which are uncompleted contracts including net estimated earnings.

+ References

No definition available.

+ Details

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Namespace Prefix:	esoa_
Data Type:	xbrli:monetaryItemType
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- Definition

The amount represents estimated earnings which are net of estimated losses.

+ References

No definition available.

+ Details

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Namespace Prefix:	esoa_
Data Type:	xbrli:monetaryItemType
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- Definition

Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

+ References

No definition available.

+ Details

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X

- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-2

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- References

No definition available.

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