$IESC
IES Holdings, Inc. Stock $iesc

$iesc Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-K Financial Statement

#000104826823000097 Filed on December 07, 2023

Income Statement

Concept	2023 Q4	2023 Q3	2023
Revenue	$634.4M	$649.0M	$2.377B
YoY Change	10.36%	5.12%	9.71%
Cost Of Revenue	$490.6M	$508.5M	$1.933B
YoY Change	2.34%	-2.13%	4.59%
Gross Profit	$143.8M	$140.6M	$444.5M
YoY Change	50.68%	43.59%	39.38%
Gross Profit Margin	22.67%	21.66%	18.7%
Selling, General & Admin	$85.85M	$87.21M	$298.6M
YoY Change	26.68%	19.8%	13.67%
% of Gross Profit	59.7%	62.04%	67.18%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$7.617M	$9.277M	$29.41M
YoY Change	19.24%	37.89%	15.47%
% of Gross Profit	5.3%	6.6%	6.62%
Operating Expenses	$85.85M	$87.28M	$298.6M
YoY Change	26.68%	19.79%	13.67%
Operating Profit	$57.99M	$53.29M	$159.8M
YoY Change	42.62%	112.86%	185.27%
Interest Expense	$397.0K	-$398.0K	$3.022M
YoY Change	-66.47%	-67.64%	-201.75%
% of Operating Profit	0.68%	-0.75%	1.89%
Other Income/Expense, Net	$1.393M	$532.0K	$1.794M
YoY Change	-300.43%	-34.0%	-4948.65%
Pretax Income	$58.99M	$53.32M	$158.5M
YoY Change	52.1%	116.66%	199.14%
Income Tax	$15.40M	$12.31M	$38.76M
% Of Pretax Income	26.1%	23.09%	24.45%
Net Earnings	$40.96M	$37.79M	$108.3M
YoY Change	55.12%	132.62%	211.51%
Net Earnings / Revenue	6.46%	5.82%	4.56%
Basic Earnings Per Share	$1.89		$4.58
Diluted Earnings Per Share	$1.87	$1.85	$4.54
COMMON SHARES
Basic Shares Outstanding	20.19M shares	20.19M shares	20.20M shares
Diluted Shares Outstanding	20.44M shares		20.41M shares

Balance Sheet

Concept	2023 Q4	2023 Q3	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$87.46M	$75.77M	$75.77M
YoY Change	1567.42%	204.93%	204.93%
Cash & Equivalents	$87.46M	$75.77M	$75.77M
Short-Term Investments
Other Short-Term Assets	$16.38M	$10.48M	$10.48M
YoY Change	-23.44%	-31.72%	-31.72%
Inventory	$113.8M	$95.66M	$95.66M
Prepaid Expenses
Receivables	$388.6M	$363.8M	$489.4M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$727.6M	$671.3M	$671.3M
YoY Change	23.46%	7.51%	7.51%
LONG-TERM ASSETS
Property, Plant & Equipment	$65.42M	$63.41M	$137.5M
YoY Change	21.49%	16.51%	14.06%
Goodwill	$92.40M	$92.40M
YoY Change	0.0%	0.0%
Intangibles	$53.14M	$56.21M
YoY Change	-20.37%	-21.86%
Long-Term Investments			$675.0K
YoY Change			-72.42%
Other Assets	$20.63M	$16.15M	$23.51M
YoY Change	22.84%	6.62%	2.35%
Total Long-Term Assets	$314.4M	$310.3M	$310.3M
YoY Change	2.26%	0.0%	0.0%
TOTAL ASSETS
Total Short-Term Assets	$727.6M	$671.3M	$671.3M
Total Long-Term Assets	$314.4M	$310.3M	$310.3M
Total Assets	$1.042B	$981.6M	$981.6M
YoY Change	16.19%	5.02%	5.02%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$270.2M	$273.0M	$138.6M
YoY Change	3.82%	-7.99%	-25.07%
Accrued Expenses	$20.18M	$19.50M	$153.9M
YoY Change	15.37%	12.57%	19.25%
Deferred Revenue	$127.0M	$103.8M
YoY Change	33.03%	22.18%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$4.529M	$4.301M	$4.301M
YoY Change	23.64%	46.89%	46.89%
Total Short-Term Liabilities	$421.9M	$400.6M	$400.6M
YoY Change	11.95%	-0.33%	-0.33%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$8.043M
YoY Change	-100.0%	-100.0%	-90.95%
Other Long-Term Liabilities	$11.85M	$16.95M	$51.01M
YoY Change	-57.5%	-24.9%	-4.67%
Total Long-Term Liabilities	$11.85M	$16.95M	$59.05M
YoY Change	-83.04%	-83.73%	-58.52%
TOTAL LIABILITIES
Total Short-Term Liabilities	$421.9M	$400.6M	$400.6M
Total Long-Term Liabilities	$11.85M	$16.95M	$59.05M
Total Liabilities	$498.4M	$481.7M	$531.6M
YoY Change	2.65%	-11.5%	-7.29%
SHAREHOLDERS EQUITY
Retained Earnings	$334.0M	$295.8M
YoY Change	47.41%	45.57%
Common Stock	$220.0K	$220.0K
YoY Change	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$49.52M	$49.45M
YoY Change	-0.27%	12.39%
Treasury Stock Shares
Shareholders Equity	$488.6M	$450.0M	$450.0M
YoY Change
Total Liabilities & Shareholders Equity	$1.042B	$981.6M	$981.6M
YoY Change	16.19%	5.02%	5.02%

Cashflow Statement

Concept	2023 Q4	2023 Q3	2023
OPERATING ACTIVITIES
Net Income	$40.96M	$37.79M	$108.3M
YoY Change	55.12%	132.62%	211.51%
Depreciation, Depletion And Amortization	$7.617M	$9.277M	$29.41M
YoY Change	19.24%	37.89%	15.47%
Cash From Operating Activities	$24.95M	$57.28M	$153.9M
YoY Change	73.96%	68.17%	846.39%
INVESTING ACTIVITIES
Capital Expenditures	$6.515M	$6.377M	$17.67M
YoY Change	140.23%	-341.01%	-160.39%
Acquisitions			$0.00
YoY Change
Other Investing Activities	$526.0K	$167.0K	$20.44M
YoY Change	-97.24%	279.55%	-7372.95%
Cash From Investing Activities	-$5.989M	-$6.210M	$2.770M
YoY Change	-136.68%	138.66%	-109.38%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$8.284M
YoY Change			-55.36%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$7.278M	-3.860M	-$105.8M
YoY Change	-85.52%	-83.69%	-804.2%
NET CHANGE
Cash From Operating Activities	$24.95M	57.28M	$153.9M
Cash From Investing Activities	-$5.989M	-6.210M	$2.770M
Cash From Financing Activities	-$7.278M	-3.860M	-$105.8M
Net Change In Cash	$11.69M	47.21M	$50.92M
YoY Change	-159.61%	506.14%	2821.51%
FREE CASH FLOW
Cash From Operating Activities	$24.95M	$57.28M	$153.9M
Capital Expenditures	$6.515M	$6.377M	$17.67M
Free Cash Flow	$18.44M	$50.90M	$136.2M
YoY Change	58.51%	38.68%	199.31%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2023Q3	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssetsNoncurrent
CY2022Q3	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccountsPayableAndAccruedLiabilitiesCurrent
CY2022Q3	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesNoncurrent
CY2023Q3	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesNoncurrent
CY2022Q3	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssetsNoncurrent
CY2022Q3	us-gaap	Assets Current AssetsCurrent	624398000	usd
CY2022	us-gaap	Fair Value Recurring Basis Unobservable Input Reconciliation Liability Gain Loss Statement Of Income Extensible List FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList	http://fasb.org/us-gaap/2023#BusinessCombinationIntegrationRelatedCosts
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CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2023	dei	Auditor Firm AuditorFirmId	42
CY2023	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2023	dei	Auditor Location AuditorLocation	Houston, Texas
CY2023Q3	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	75770000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	24848000	usd
CY2023Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	363836000	usd
CY2022Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	370726000	usd
CY2023Q3	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	76934000	usd
CY2022Q3	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	65065000	usd
CY2023Q3	us-gaap	Inventory Net InventoryNet	95655000	usd
CY2022Q3	us-gaap	Inventory Net InventoryNet	96333000	usd
CY2023Q3	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	48620000	usd
CY2022Q3	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	52076000	usd
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CY2023Q3	us-gaap	Assets Current AssetsCurrent	671296000	usd
CY2023Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	63410000	usd
CY2022Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	54426000	usd
CY2023Q3	us-gaap	Goodwill Goodwill	92395000	usd
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CY2023Q3	us-gaap	Liabilities Liabilities	481664000	usd
CY2022Q3	us-gaap	Liabilities Liabilities	544228000	usd
CY2023Q3	us-gaap	Minority Interest MinorityInterest	49951000	usd
CY2022Q3	us-gaap	Minority Interest MinorityInterest	29193000	usd
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CY2023Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2022Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
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CY2023Q3	us-gaap	Common Stock Value CommonStockValue	220000	usd
CY2022Q3	us-gaap	Common Stock Value CommonStockValue	220000	usd
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CY2022Q3	us-gaap	Treasury Stock Value TreasuryStockValue	44000000	usd
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CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	449985000	usd
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CY2022	us-gaap	Gross Profit GrossProfit	318930000	usd
CY2021	us-gaap	Gross Profit GrossProfit	287998000	usd
CY2023	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	298625000	usd
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	262714000	usd
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CY2022	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	277000	usd
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CY2021	us-gaap	Interest Expense InterestExpense	962000	usd
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CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	7011000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3522000	usd
CY2021	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-315000	usd
CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22049529	shares
CY2021Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1316998	shares
CY2022	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	157167	shares
CY2022	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	usd
CY2022	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	556798	shares
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	18556000	usd
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	9000	shares
CY2022	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	53000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3775000	usd
CY2022	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-4699000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	34762000	usd
CY2022Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22049529	shares
CY2022Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1707629	shares
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	361288000	usd
CY2023	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	105755	shares
CY2023	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	usd
CY2023	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	256437	shares
CY2023	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	8284000	usd
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3000	shares
CY2023	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	22000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4372000	usd
CY2023	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-15701000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	108288000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	108288000	usd
CY2023Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22049529	shares
CY2023Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	1855311	shares
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	449985000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	119787000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	40186000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	68676000	usd
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1216000	usd
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	268000	usd
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	199000	usd
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	198000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	29407000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	25468000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21914000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	14139000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	69000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	47000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	4372000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	3775000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	3522000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5185000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-31000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11724000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-2917000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	87160000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	55371000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1142000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	27760000	usd
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	30517000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-3456000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	8688000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	13451000	usd
CY2023	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	7322000	usd
CY2022	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	18609000	usd
CY2021	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	9226000	usd
CY2023	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-2067000	usd
CY2022	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	3006000	usd
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-703000	usd
CY2023	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-10047000	usd
CY2022	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	67128000	usd
CY2021	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	30623000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	19051000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	22450000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	6746000	usd
CY2023	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	162000	usd
CY2022	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-762000	usd
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	1214000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	153902000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	16262000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	37924000	usd
CY2023	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	17667000	usd
CY2022	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	29255000	usd
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	7401000	usd
CY2023	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	20602000	usd
CY2022	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	219000	usd
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	295000	usd
CY2023	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	165000	usd
CY2022	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	500000	usd
CY2021	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	92463000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2770000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-29536000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-99569000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	2381562000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	1924469000	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	1318530000	usd
CY2023	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2464221000	usd
CY2022	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1882148000	usd
CY2021	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1278204000	usd
CY2023	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	-3338000	usd
CY2022	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	-1801000	usd
CY2021	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	-648000	usd
CY2023	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	0	usd
CY2022	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	0	usd
CY2021	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	1188000	usd
CY2023	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-11491000	usd
CY2022	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-7000000	usd
CY2021	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-311000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	8284000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18556000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7006000	usd
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	22000	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	53000	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-105750000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	15017000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	31173000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	50922000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1743000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-30472000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	24848000	usd
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	23105000	usd
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	53577000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	75770000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	24848000	usd
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	23105000	usd
CY2023	us-gaap	Interest Paid InterestPaid	2089000	usd
CY2022	us-gaap	Interest Paid InterestPaid	3068000	usd
CY2021	us-gaap	Interest Paid InterestPaid	738000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	12056000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3953000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5062000	usd
CY2023	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	4712000	usd
CY2022	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	0	usd
CY2021	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	0	usd
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Use of Estimates</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires the use of estimates and assumptions by management in determining the reported amounts of assets and liabilities, disclosures of contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates are primarily used in our revenue recognition of construction in progress, fair value assumptions in accounting for business combinations, stock-based compensation, reserves for legal matters, and realizability of deferred tax assets and unrecognized tax benefits.</span></div>
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	268000	usd
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	199000	usd
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	198000	usd
CY2023Q3	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	836000	usd
CY2022Q3	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	1031000	usd
CY2023Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1649000	usd
CY2022Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	5361000	usd
CY2023Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	20383000	usd
CY2021	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	1188000	usd
CY2022Q4	us-gaap	Sale Of Stock Percentage Of Ownership Before Transaction SaleOfStockPercentageOfOwnershipBeforeTransaction	1
CY2023	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	70000	usd
CY2023Q3	iesc	Controlling Shareholder Ownership Percentage ControllingShareholderOwnershipPercentage	0.58
CY2022Q4	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	8000	usd
CY2022Q4	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	9000	usd
CY2023	us-gaap	Revenues Revenues	2377227000	usd
CY2023	us-gaap	Revenues Revenues	2377227000	usd
CY2022	us-gaap	Revenues Revenues	2166808000	usd
CY2021	us-gaap	Revenues Revenues	1536493000	usd
CY2023Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	4523000	usd
CY2023	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	82520000	usd
CY2022	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	52683000	usd
CY2023	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	usd
CY2022	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	usd
CY2021	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	usd
CY2023Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1143423000	usd
CY2023Q3	iesc	Performance Obligation Next12 Months PerformanceObligationNext12Months	921656000	usd
CY2023Q3	us-gaap	Land Land	4181000	usd
CY2022Q3	us-gaap	Land Land	4569000	usd
CY2023Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	33753000	usd
CY2022Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	32477000	usd
CY2023Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	65787000	usd
CY2022Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	55917000	usd
CY2023Q3	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	14508000	usd
CY2022Q3	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	8699000	usd
CY2023Q3	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	2507000	usd
CY2022Q3	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	2239000	usd
CY2023Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	120736000	usd
CY2022Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	103901000	usd
CY2023Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	58693000	usd
CY2022Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	50014000	usd
CY2023Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1367000	usd
CY2022Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	539000	usd
CY2023Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	63410000	usd
CY2022Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	54426000	usd
CY2023	us-gaap	Depreciation Depreciation	12121000	usd
CY2022	us-gaap	Depreciation Depreciation	10073000	usd
CY2021	us-gaap	Depreciation Depreciation	8090000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	108288000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	34762000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	66658000	usd
CY2023	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-15701000	usd
CY2022	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-4695000	usd
CY2021	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-315000	usd
CY2023	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-11000	usd
CY2022	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-21000	usd
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-56000	usd
CY2023	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	92576000	usd
CY2022	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	30046000	usd
CY2021	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	66287000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20196850	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20667745	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20790307	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	226880	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	296125	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.58
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.54
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.44
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.15
CY2023Q3	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	138591000	usd
CY2022Q3	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	184963000	usd
CY2023Q3	us-gaap	Accrued Salaries Current And Noncurrent AccruedSalariesCurrentAndNoncurrent	90667000	usd
CY2022Q3	us-gaap	Accrued Salaries Current And Noncurrent AccruedSalariesCurrentAndNoncurrent	75190000	usd
CY2023Q3	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	7726000	usd
CY2022Q3	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	7693000	usd
CY2023Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	19496000	usd
CY2022Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	17319000	usd
CY2023Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	40317000	usd
CY2022Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	31785000	usd
CY2023Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	296797000	usd
CY2022Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	316950000	usd
CY2023Q3	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	783000	usd
CY2022Q3	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	706000	usd
CY2023Q3	us-gaap	Investments Investments	675000	usd
CY2022Q3	us-gaap	Investments Investments	2447000	usd
CY2023Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	12344000	usd
CY2022Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	10246000	usd
CY2023Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2345000	usd
CY2022Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1746000	usd
CY2023Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	16147000	usd
CY2022Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15145000	usd
CY2023Q3	us-gaap	Line Of Credit LineOfCredit	0	usd
CY2022Q3	us-gaap	Line Of Credit LineOfCredit	82659000	usd
CY2023Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	0	usd
CY2022Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1031000	usd
CY2023Q3	us-gaap	Long Term Debt LongTermDebt	0	usd
CY2022Q3	us-gaap	Long Term Debt LongTermDebt	81628000	usd
CY2023Q3	us-gaap	Loans Payable LoansPayable	0	usd
CY2023Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	4166000	usd
CY2023Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	142761000	usd
CY2023Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0682
CY2023	us-gaap	Interest Expense Debt InterestExpenseDebt	3022000	usd
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	2970000	usd
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	962000	usd
CY2022Q2	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	125000000	usd
CY2023Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	150000000	usd
CY2023Q3	iesc	Fixed Charge Coverage Ratio Minimum FixedChargeCoverageRatioMinimum	1.1	rate
CY2023Q3	iesc	Line Of Credit Facility Covenant Terms Minimum Liquidity Percentage LineOfCreditFacilityCovenantTermsMinimumLiquidityPercentage	0.10
CY2023Q3	iesc	Line Of Credit Facility Covenant Terms Minimum Liquidity Amount LineOfCreditFacilityCovenantTermsMinimumLiquidityAmount	15000000	usd
CY2023Q3	iesc	Line Of Credit Facility Covenant Terms Minimum Liquidity Excess Availability Percentage LineOfCreditFacilityCovenantTermsMinimumLiquidityExcessAvailabilityPercentage	0.50
CY2023Q3	iesc	Liquidity Liquidity	218531000	usd
CY2023Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	142761000	usd
CY2023Q3	iesc	Fixed Charge Coverage Ratio Current FixedChargeCoverageRatioCurrent	6.3	rate
CY2023Q3	iesc	Fixed Charge Coverage Ratio Minimum FixedChargeCoverageRatioMinimum	1.1	rate
CY2023Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	19496000	usd
CY2022Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	17319000	usd
CY2023Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	4301000	usd
CY2022Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	2928000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	20020000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	4436000	usd
CY2023Q3	iesc	Lessee Total Lease Liability Payments Due In Next Twelve Months LesseeTotalLeaseLiabilityPaymentsDueInNextTwelveMonths	24456000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	16239000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	4204000	usd
CY2023Q3	iesc	Total Lease Liability Payments Year Two TotalLeaseLiabilityPaymentsYearTwo	20443000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	12662000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	3338000	usd
CY2023Q3	iesc	Total Lease Liability Payments Year Three TotalLeaseLiabilityPaymentsYearThree	16000000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	9362000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1598000	usd
CY2023Q3	iesc	Total Lease Liability Payments Year Four TotalLeaseLiabilityPaymentsYearFour	10960000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5043000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	155000	usd
CY2023Q3	iesc	Total Lease Liability Payments Year Five TotalLeaseLiabilityPaymentsYearFive	5198000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	6236000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	usd
CY2023Q3	iesc	Total Lease Liability Payments Due After Year Five TotalLeaseLiabilityPaymentsDueAfterYearFive	6236000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	69562000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	13731000	usd
CY2023Q3	iesc	Total Lease Liability Payments Due TotalLeaseLiabilityPaymentsDue	83293000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	7968000	usd
CY2023Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1332000	usd
CY2023Q3	iesc	Total Lease Liability Undiscounted Excess Amount TotalLeaseLiabilityUndiscountedExcessAmount	9300000	usd
CY2023Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	61594000	usd
CY2023Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	12399000	usd
CY2023Q3	iesc	Total Lease Liability TotalLeaseLiability	73993000	usd
CY2023	iesc	Minimumpaymentsforleasesnotyetcommenced Minimumpaymentsforleasesnotyetcommenced	9616000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	18501000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	16000000	usd
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	3603000	usd
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	119000	usd
CY2022	iesc	Finance Lease Cost FinanceLeaseCost	1998000	usd
CY2021	iesc	Finance Lease Cost FinanceLeaseCost	753000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1883000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2426000	usd
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1575000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	2805000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	1900000	usd
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	1286000	usd
CY2023	us-gaap	Lease Cost LeaseCost	27538000	usd
CY2022	us-gaap	Lease Cost LeaseCost	22324000	usd
CY2021	us-gaap	Lease Cost LeaseCost	17019000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	22022000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	20799000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	15011000	usd
CY2023	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	746000	usd
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	269000	usd
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	119000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	27491000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	31422000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	24606000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	5973000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	7950000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	2962000	usd
CY2023Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M
CY2022Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y9M18D
CY2023Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y4M24D
CY2022Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y10M24D
CY2023Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.051
CY2022Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.040
CY2023Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.060
CY2022Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.047
CY2023	us-gaap	Payments For Rent PaymentsForRent	20384000	usd
CY2022	us-gaap	Payments For Rent PaymentsForRent	18426000	usd
CY2021	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	14980000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	27205000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9401000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4300000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	3000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	11678000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6370000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3445000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4505000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	886000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-34000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	46000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38761000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12815000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16231000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	33295000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	11130000	usd
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	17830000	usd
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	2017000	usd
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1610000	usd
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1086000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6338000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2114000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3876000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Contingencies Domestic IncomeTaxReconciliationTaxContingenciesDomestic	396000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Contingencies Domestic IncomeTaxReconciliationTaxContingenciesDomestic	0	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies Domestic IncomeTaxReconciliationTaxContingenciesDomestic	0	usd
CY2022	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	283000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	usd
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	427000	usd
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	usd
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-332000	usd
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-665000	usd
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-715000	usd
CY2023	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	2415000	usd
CY2022	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	1139000	usd
CY2021	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	428000	usd
CY2023	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-52000	usd
CY2023	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-52000	usd
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-118000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	0	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-133000	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-2898000	usd
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	0	usd
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-812000	usd
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-2241000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-486000	usd
CY2022	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	usd
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-161000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38761000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12815000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16231000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	349000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	1246000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	18167000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	18645000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	4224000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	4542000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1718000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1318000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	0	usd
CY2022Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	125000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1298000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1142000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	0	usd
CY2022Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	82000	usd
CY2023Q3	iesc	Deferred Tax Assets Leases DeferredTaxAssetsLeases	14207000	usd
CY2022Q3	iesc	Deferred Tax Assets Leases DeferredTaxAssetsLeases	12534000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	8596000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4236000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	48559000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	43870000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	823000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	875000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	47736000	usd
CY2022Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	42995000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2231000	usd
CY2022Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	126000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	9984000	usd
CY2022Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	9044000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	14102000	usd
CY2022Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	12500000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1036000	usd
CY2022Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	806000	usd
CY2023Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	27353000	usd
CY2022Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	22476000	usd
CY2023Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	20383000	usd
CY2022Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	20519000	usd
CY2023	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-52000	usd
CY2022	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	283000	usd
CY2023Q3	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	5202000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	70216000	usd
CY2023Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	20383000	usd
CY2022Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21746000	usd
CY2021Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21879000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	819000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	26000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	218000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	159000	usd
CY2023Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22347000	usd
CY2022Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21746000	usd
CY2023Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22347000	usd
CY2022Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21746000	usd
CY2023Q3	us-gaap	Increase In Unrecognized Tax Benefits Is Reasonably Possible IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	6600000	usd
CY2023Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	697000	usd
CY2022Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	52000	usd
CY2023	us-gaap	Revenues Revenues	2377227000	usd
CY2023	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1932688000	usd
CY2023	us-gaap	Gross Profit GrossProfit	444539000	usd
CY2023	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	298625000	usd
CY2023	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	277000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	14139000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	159776000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	29407000	usd
CY2023	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	17667000	usd
CY2023Q3	us-gaap	Assets Assets	981600000	usd
CY2022	us-gaap	Revenues Revenues	2166808000	usd
CY2022	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1847878000	usd
CY2022	us-gaap	Gross Profit GrossProfit	318930000	usd
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	262714000	usd
CY2022	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	277000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	69000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	56008000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	25468000	usd
CY2022	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	29255000	usd
CY2022Q3	us-gaap	Assets Assets	934709000	usd
CY2021	us-gaap	Revenues Revenues	1536493000	usd
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1248495000	usd
CY2021	us-gaap	Gross Profit GrossProfit	287998000	usd
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	202251000	usd
CY2021	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	211000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	47000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	85583000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21914000	usd
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	7401000	usd
CY2021Q3	us-gaap	Assets Assets	766622000	usd
CY2023Q3	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	619735	shares
CY2023Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1500000	shares
CY2019Q2	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1000000.0	shares
CY2022Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	40000000	usd
CY2023	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	224013	shares
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	511600	shares
CY2023	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	31.06
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	32.02
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	105755	shares
CY2023	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	32158	shares
CY2023	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	224013	shares
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	266	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	157167	shares
CY2022	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	45198	shares
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	511600	shares
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4181000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-142000	usd
CY2022Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4323000	usd
CY2023	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-142000	usd
CY2023Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4465000	usd
CY2022Q4	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	8000	usd
CY2022Q4	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	9000	usd
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5309000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4494000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3386000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Funded Percentage DefinedBenefitPlanFundedPercentage	0.9093	rate
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-09-30
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2023Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	783000	usd
CY2023Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	657000	usd
CY2023Q3	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	4465000	usd
CY2022Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	706000	usd
CY2022Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	1937000	usd
CY2022Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	585000	usd
CY2022Q3	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	4323000	usd
CY2023Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	4465000	usd
CY2023Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	14334000	usd
CY2022Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	12504000	usd
CY2023Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	12939000	usd
CY2022Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	8218000	usd
CY2023Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	3399000	usd
CY2022Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	2129000	usd
CY2023Q3	us-gaap	Other Inventory OtherInventory	64983000	usd
CY2022Q3	us-gaap	Other Inventory OtherInventory	73482000	usd
CY2023Q3	us-gaap	Inventory Net InventoryNet	95655000	usd
CY2022Q3	us-gaap	Inventory Net InventoryNet	96333000	usd
CY2023Q3	us-gaap	Goodwill Goodwill	92395000	usd
CY2023Q3	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	6976000	usd
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-09-30
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2023Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	111445000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	55237000	usd
CY2023Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	56208000	usd
CY2022Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	117359000	usd
CY2022Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	45423000	usd
CY2022Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	71936000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13684000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13666000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13191000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	12265000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	12081000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	11760000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	8391000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	5416000	usd
CY2023Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	6295000	usd
CY2023Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	56208000	usd
CY2023Q3	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	10451000	usd
CY2023	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	3095000	usd
CY2023Q3	us-gaap	Loss Contingency Discounted Amount Of Insurance Related Assessment Liability LossContingencyDiscountedAmountOfInsuranceRelatedAssessmentLiability	7726000	usd
CY2022Q3	us-gaap	Loss Contingency Discounted Amount Of Insurance Related Assessment Liability LossContingencyDiscountedAmountOfInsuranceRelatedAssessmentLiability	7693000	usd
CY2023Q3	iesc	Estimatedcostofcompletionofbondedproject Estimatedcostofcompletionofbondedproject	151186000	usd
CY2023Q3	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	0	usd
CY2022Q2	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Less Noncontrolling Interest BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest	92463000	usd
CY2022Q2	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Less Noncontrolling Interest BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest	92463000	usd
CY2023Q3	us-gaap	Escrow Deposit EscrowDeposit	10916000	usd
CY2023	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	4500000	usd
CY2023	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	4500000	usd
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	4074000	usd
CY2022Q4	us-gaap	Sale Of Stock Percentage Of Ownership Before Transaction SaleOfStockPercentageOfOwnershipBeforeTransaction	1	rate
CY2023	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	13045000	usd
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-09-30
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-09-30
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2023Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2023Q3	ecd	Trd Arr Adoption Date TrdArrAdoptionDate	August 31, 2023
CY2023Q3	ecd	Trd Arr Ind Name TrdArrIndName	Jeffrey L. Gendell
CY2023Q3	ecd	Trd Arr Ind Title TrdArrIndTitle	Chairman and Chief Executive Officer
CY2023Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	true
CY2023Q3	ecd	Trd Arr Securities Agg Avail Amt TrdArrSecuritiesAggAvailAmt	200000	shares

Files In Submission

Name	View Source	Status
iesc-20230930_lab.xml	Edgar Link	unprocessable
iesc-20230930_def.xml	Edgar Link	unprocessable
iesc-20230930_cal.xml	Edgar Link	unprocessable
0001048268-23-000097-index-headers.html	Edgar Link	pending
0001048268-23-000097-index.html	Edgar Link	pending
0001048268-23-000097.txt	Edgar Link	pending
0001048268-23-000097-xbrl.zip	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
iesc-20230930.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
iesc-20230930.xsd	Edgar Link	pending
iesc-20230930_g1.jpg	Edgar Link	pending
iesc-20230930_g2.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
q42023ex1012.htm	Edgar Link	pending
q42023ex211.htm	Edgar Link	pending
q42023ex231.htm	Edgar Link	pending
q42023ex311.htm	Edgar Link	pending
q42023ex312.htm	Edgar Link	pending
q42023ex321.htm	Edgar Link	pending
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q42023ex44.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
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R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
iesc-20230930_pre.xml	Edgar Link	unprocessable
iesc-20230930_htm.xml	Edgar Link	completed
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
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R9.htm	Edgar Link	pending
R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$IESC
IES Holdings, Inc. Stock $iesc

2023 Q4 Form 10-K Financial Statement

#000104826823000097 Filed on December 07, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IESC IES Holdings, Inc. Stock $iesc

2023 Q4 Form 10-K Financial Statement

#000104826823000097 Filed on December 07, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IESC
IES Holdings, Inc. Stock $iesc