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Controlling Shareholder (Details) - USD ($) $ in Thousands	Dec. 01, 2022	Dec. 31, 2024
Risks and Uncertainties [Abstract]
ControllingShareholderOwnershipPercentage		55.00%
Related Party Transaction, Purchases from Related Party	$ 9

X

- Definition

Percentage of outstanding common stock owned by controlling shareholder

+ References

No definition available.

+ Details

Name:	iesc_ControllingShareholderOwnershipPercentage
Namespace Prefix:	iesc_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration