XML 59 R47.htm IDEA: XBRL DOCUMENT v3.25.2

Subsequent Events (Details) - USD ($) $ in Thousands			9 Months Ended
	Jul. 01, 2025	Jan. 21, 2025	Jun. 30, 2025	Jun. 30, 2024	Jan. 20, 2025
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 300			$ 150,000
Payments for Repurchase of Redeemable Noncontrolling Interest			$ 0	$ 31,200
Minimum [Member] | Pricing Level III
Subsequent Event [Line Items]
Line of Credit Facility, Interest Rate Description		100.00%
Minimum [Member] | Pricing Level II
Subsequent Event [Line Items]
Line of Credit Facility, Interest Rate Description		175.00%
Minimum [Member] | Pricing Level I
Subsequent Event [Line Items]
Line of Credit Facility, Interest Rate Description		250.00%
Maximum [Member] | Pricing Level III
Subsequent Event [Line Items]
Line of Credit Facility, Interest Rate Description		175.00%
Maximum [Member] | Pricing Level II
Subsequent Event [Line Items]
Line of Credit Facility, Interest Rate Description		250.00%
Maximum [Member] | Pricing Level IV
Subsequent Event [Line Items]
Line of Credit Facility, Interest Rate Description		100.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Pricing Level III
Subsequent Event [Line Items]
Credit Agreement Interest Margin Rate		1.75%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Pricing Level II
Subsequent Event [Line Items]
Credit Agreement Interest Margin Rate		2.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Pricing Level IV
Subsequent Event [Line Items]
Credit Agreement Interest Margin Rate		1.50%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Pricing Level I
Subsequent Event [Line Items]
Credit Agreement Interest Margin Rate		2.25%
Base Rate | Pricing Level III
Subsequent Event [Line Items]
Credit Agreement Interest Margin Rate		0.75%
Base Rate | Pricing Level II
Subsequent Event [Line Items]
Credit Agreement Interest Margin Rate		1.00%
Base Rate | Pricing Level IV
Subsequent Event [Line Items]
Credit Agreement Interest Margin Rate		0.50%
Base Rate | Pricing Level I
Subsequent Event [Line Items]
Credit Agreement Interest Margin Rate		1.25%
Subsequent Event | Edmonson Electric
Subsequent Event [Line Items]
Payments for Repurchase of Redeemable Noncontrolling Interest	$ 40

X

- Definition

Consolidated Total Leverage Ratio

+ References

No definition available.

+ Details

Name:	iesc_ConsolidatedTotalLeverageRatio
Namespace Prefix:	iesc_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Credit Agreement Interest Margin Rate

+ References

No definition available.

+ Details

Name:	iesc_CreditAgreementInterestMarginRate
Namespace Prefix:	iesc_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The cash outflow during the period for redemption of redeemable noncontrolling interests.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

+ Details

Name:	us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	iesc_PricingLevelAxis=iesc_PricingLevelIIIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	iesc_PricingLevelAxis=iesc_PricingLevelIIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	iesc_PricingLevelAxis=iesc_PricingLevelIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	iesc_PricingLevelAxis=iesc_PricingLevelIVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	iesc_RedeemableNoncontrollingInterestAxis=iesc_EdmonsonElectricMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: