v3.25.4

Controlling Shareholder (Details) - USD ($) $ in Thousands	Mar. 01, 2023	Dec. 31, 2025
Risks and Uncertainties [Abstract]
ControllingShareholderOwnershipPercentage		53.00%
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-types: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