$IESC
IES Holdings, Inc. Stock $iesc

$iesc Overview Financials Valuation SEC Filings Company Website

2021 Q3 Form 10-K Financial Statement

#000104826821000162 Filed on December 03, 2021

Income Statement

Concept	2021 Q3	2021	2020 Q3
Revenue	$483.8M	$1.536B	$330.4M
YoY Change	46.43%	29.02%	12.54%
Cost Of Revenue	$392.2M	$1.248B	$262.3M
YoY Change	49.53%	29.66%	8.08%
Gross Profit	$91.62M	$288.0M	$68.16M
YoY Change	34.41%	26.34%	33.99%
Gross Profit Margin	18.94%	18.74%	20.63%
Selling, General & Admin	$61.47M	$202.3M	$46.70M
YoY Change	31.62%	18.34%	25.88%
% of Gross Profit	67.09%	70.23%	68.52%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$6.004M	$21.91M	$3.710M
YoY Change	61.83%	75.2%	57.2%
% of Gross Profit	6.55%	7.61%	5.44%
Operating Expenses	$61.54M	$202.3M	$46.70M
YoY Change	31.77%	18.34%	26.22%
Operating Profit	$30.08M	$85.58M	$21.46M
YoY Change	40.16%	70.88%	54.72%
Interest Expense	-$325.0K	-$962.0K	-$100.0K
YoY Change	225.0%	20.25%	-66.67%
% of Operating Profit	-1.08%	-1.12%	-0.47%
Other Income/Expense, Net	$38.00K	$286.0K	$300.0K
YoY Change	-87.33%	-2483.33%
Pretax Income	$29.82M	$84.91M	$14.60M
YoY Change	104.21%	72.25%	7.35%
Income Tax	$6.341M	$16.23M	$1.100M
% Of Pretax Income	21.27%	19.12%	7.53%
Net Earnings	$22.42M	$66.66M	$14.61M
YoY Change	53.52%	60.24%	48.12%
Net Earnings / Revenue	4.63%	4.34%	4.42%
Basic Earnings Per Share		$3.19	$0.69
Diluted Earnings Per Share	$1.060M	$3.15	$0.68
COMMON SHARES
Basic Shares Outstanding	20.86M shares	20.79M shares	21.05M shares
Diluted Shares Outstanding		21.09M shares

Balance Sheet

Concept	2021 Q3	2021	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$23.11M	$23.11M	$53.60M
YoY Change	-56.89%	-56.89%	183.6%
Cash & Equivalents	$23.11M	$23.11M	$53.58M
Short-Term Investments
Other Short-Term Assets	$21.07M	$21.07M	$9.200M
YoY Change	128.97%	128.97%	-13.21%
Inventory	$68.57M	$68.57M	$24.89M
Prepaid Expenses
Receivables	$286.7M	$371.4M	$213.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$484.2M	$484.2M	$371.5M
YoY Change	30.35%	30.33%	25.3%
LONG-TERM ASSETS
Property, Plant & Equipment	$35.45M	$82.30M	$24.59M
YoY Change	44.19%	45.92%	-4.49%
Goodwill	$92.40M		$53.76M
YoY Change	71.86%		6.2%
Intangibles	$85.62M		$39.36M
YoY Change	117.54%		47.83%
Long-Term Investments		$10.00K
YoY Change
Other Assets	$7.049M	$22.12M	$5.780M
YoY Change	21.96%	-44.14%	17.05%
Total Long-Term Assets	$282.4M	$282.4M	$189.1M
YoY Change	49.38%	49.44%	27.07%
TOTAL ASSETS
Total Short-Term Assets	$484.2M	$484.2M	$371.5M
Total Long-Term Assets	$282.4M	$282.4M	$189.1M
Total Assets	$766.6M	$766.6M	$560.5M
YoY Change	36.77%	36.77%	25.89%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$234.1M	$137.0M	$175.2M
YoY Change	33.62%	46.8%	14.58%
Accrued Expenses	$13.97M	$111.1M	$11.10M
YoY Change	25.88%	19.48%
Deferred Revenue	$62.49M		$55.74M
YoY Change	12.1%		37.41%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.033M	$1.033M	$400.0K
YoY Change	158.25%	158.25%
Total Short-Term Liabilities	$311.6M	$311.6M	$242.4M
YoY Change	28.52%	28.55%	25.31%
LONG-TERM LIABILITIES
Long-Term Debt	$39.75M	$42.62M	$217.0K
YoY Change	18216.13%	2944.14%	-27.42%
Other Long-Term Liabilities	$16.08M	$41.86M	$12.22M
YoY Change	31.64%	32.46%	528.02%
Total Long-Term Liabilities	$55.83M	$84.48M	$12.43M
YoY Change	349.05%	155.98%	454.01%
TOTAL LIABILITIES
Total Short-Term Liabilities	$311.6M	$311.6M	$242.4M
Total Long-Term Liabilities	$55.83M	$84.48M	$12.43M
Total Liabilities	$396.1M	$420.7M	$275.4M
YoY Change	43.81%	51.76%	40.72%
SHAREHOLDERS EQUITY
Retained Earnings	$173.1M		$107.0M
YoY Change	61.8%		63.12%
Common Stock	$220.0K		$220.0K
YoY Change	0.0%		0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$29.30M		$24.50M
YoY Change	19.6%		96.26%
Treasury Stock Shares	1.317M shares		1.287M shares
Shareholders Equity	$346.0M	$346.0M	$283.3M
YoY Change
Total Liabilities & Shareholders Equity	$766.6M	$766.6M	$560.5M
YoY Change	36.77%	36.77%	25.89%

Cashflow Statement

Concept	2021 Q3	2021	2020 Q3
OPERATING ACTIVITIES
Net Income	$22.42M	$66.66M	$14.61M
YoY Change	53.52%	60.24%	48.12%
Depreciation, Depletion And Amortization	$6.004M	$21.91M	$3.710M
YoY Change	61.83%	75.2%	57.2%
Cash From Operating Activities	$2.775M	$37.92M	$21.14M
YoY Change	-86.87%	-50.58%	14.77%
INVESTING ACTIVITIES
Capital Expenditures	-$2.010M	-$7.401M	-$1.050M
YoY Change	91.43%	55.81%	-7.08%
Acquisitions		$92.46M
YoY Change		219.37%
Other Investing Activities	$360.0K	-$92.17M	$40.00K
YoY Change	800.0%	219.47%	-91.67%
Cash From Investing Activities	-$1.650M	-$99.57M	-$1.000M
YoY Change	65.0%	196.4%	53.85%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$7.006M
YoY Change		-8.98%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	3.456M	$31.17M	-2.400M
YoY Change	-244.0%	-466.53%	-79.92%
NET CHANGE
Cash From Operating Activities	2.775M	$37.92M	21.14M
Cash From Investing Activities	-1.650M	-$99.57M	-1.000M
Cash From Financing Activities	3.456M	$31.17M	-2.400M
Net Change In Cash	4.581M	-$30.47M	17.74M
YoY Change	-74.18%	-187.96%	204.81%
FREE CASH FLOW
Cash From Operating Activities	$2.775M	$37.92M	$21.14M
Capital Expenditures	-$2.010M	-$7.401M	-$1.050M
Free Cash Flow	$4.785M	$45.33M	$22.19M
YoY Change	-78.44%	-44.38%	13.5%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001048268
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2021Q3	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountsPayableAndAccruedLiabilitiesCurrent
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CY2020Q3	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2020Q3	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssetsNoncurrent
CY2021Q3	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssetsNoncurrent
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-13783
CY2021	dei	Entity Registrant Name EntityRegistrantName	IES Holdings, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	76-0542208
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	5433 Westheimer Road
CY2021	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 500
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Houston
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77056
CY2021	dei	City Area Code CityAreaCode	713
CY2021	dei	Local Phone Number LocalPhoneNumber	860-1500
CY2021	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2021	dei	Trading Symbol TradingSymbol	IESC
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q1	dei	Entity Public Float EntityPublicFloat	450900000	USD
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CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	23105000	USD
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CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21086432	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21092410	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21315245	shares
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	220407000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	9802000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2357000	USD
CY2019	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	80000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	33206000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	246248000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	7697000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	34000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3323000	USD
CY2020	iesc	Cumulative Effect Of New Accounting Principle CumulativeEffectOfNewAccountingPrinciple	-194000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	41599000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	283313000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	7010000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	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
CY2021	us-gaap	Net Income Loss NetIncomeLoss	66658000	USD
CY2021Q3	us-gaap	Treasury Stock Value TreasuryStockValue	29300000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	13451000	USD
CY2021Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	201899000	USD
CY2021Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	173134000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	345953000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	345953000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	68676000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	40554000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	33478000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1864000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	552000	USD
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	198000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	152000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	318000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21914000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	12508000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9557000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	47000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	0	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	52000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	3522000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	3323000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	2357000	USD
CY2021Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	6976000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11724000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5122000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5681000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	55371000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	25389000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	35254000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	30517000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	2822000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	684000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-435000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-1586000	USD
CY2021	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	9226000	USD
CY2020	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	9355000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	7171000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-703000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-510000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	444000	USD
CY2021	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	30623000	USD
CY2020	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	20122000	USD
CY2019	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	22472000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	6746000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	13967000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	6683000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	1214000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	8774000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-459000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	37924000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	76741000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	38724000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	7401000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4745000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	6300000	USD
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	295000	USD
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	104000	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	502000	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	92463000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	28952000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	50000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-99569000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-33593000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5748000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	1318530000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	592768000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	89261000	USD
CY2021	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1278204000	USD
CY2020	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	592756000	USD
CY2019	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	119508000	USD
CY2021	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	-648000	USD
CY2020	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	-215000	USD
CY2019	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	0	USD
CY2021	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2020	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	240000	USD
CY2021	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	1188000	USD
CY2021	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-311000	USD
CY2020	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-639000	USD
CY2019	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-240000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7006000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7697000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	9802000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	34000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	31173000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-8505000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-40289000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-30472000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	34643000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-7313000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	53577000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	18934000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	26247000	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
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	18934000	USD
CY2021	us-gaap	Interest Paid InterestPaid	738000	USD
CY2020	us-gaap	Interest Paid InterestPaid	782000	USD
CY2019	us-gaap	Interest Paid InterestPaid	1743000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5062000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	323000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1370000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	6976000	USD
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	198000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	152000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	318000	USD
CY2021Q3	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	656000	USD
CY2020Q3	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	736000	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2387000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2613000	USD
CY2021Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	19009000	USD
CY2021	us-gaap	Loss Contingency Undiscounted Amount Of Insurance Related Assessment Liability LossContingencyUndiscountedAmountOfInsuranceRelatedAssessmentLiability	3266000	USD
CY2020	us-gaap	Loss Contingency Undiscounted Amount Of Insurance Related Assessment Liability LossContingencyUndiscountedAmountOfInsuranceRelatedAssessmentLiability	3886000	USD
CY2021	iesc	Loss Contingency Undiscounted First Year LossContingencyUndiscountedFirstYear	1047000	USD
CY2021	iesc	Loss Contingency Undiscounted Second Year LossContingencyUndiscountedSecondYear	714000	USD
CY2021	iesc	Loss Contingency Undiscounted Third Year LossContingencyUndiscountedThirdYear	452000	USD
CY2021	iesc	Loss Contingency Undiscounted Fourth Year LossContingencyUndiscountedFourthYear	285000	USD
CY2021	iesc	Loss Contingency Undiscounted Fifth Year LossContingencyUndiscountedFifthYear	167000	USD
CY2021	iesc	Loss Contingency Undiscountedafter Fifth Year LossContingencyUndiscountedafterFifthYear	601000	USD
CY2021	us-gaap	Loss Contingency Undiscounted Amount Of Insurance Related Assessment Liability LossContingencyUndiscountedAmountOfInsuranceRelatedAssessmentLiability	3266000	USD
CY2021Q3	us-gaap	Loss Contingency Accrual Insurance Related Assessment Discount Rate LossContingencyAccrualInsuranceRelatedAssessmentDiscountRate	0.010
CY2020Q3	us-gaap	Loss Contingency Accrual Insurance Related Assessment Discount Rate LossContingencyAccrualInsuranceRelatedAssessmentDiscountRate	0.003
CY2021Q3	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	3234000	USD
CY2020Q3	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	3832000	USD
CY2021Q3	us-gaap	Liability For Claims And Claims Adjustment Expense Disability Accident And Health LiabilityForClaimsAndClaimsAdjustmentExpenseDisabilityAccidentAndHealth	2553000	USD
CY2020Q3	us-gaap	Liability For Claims And Claims Adjustment Expense Disability Accident And Health LiabilityForClaimsAndClaimsAdjustmentExpenseDisabilityAccidentAndHealth	2422000	USD
CY2021Q2	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	1188000	USD
CY2021Q3	us-gaap	Redeemable Noncontrolling Interest Equity Redemption Value RedeemableNoncontrollingInterestEquityRedemptionValue	18262000	USD
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	70000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	32434000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	32237000	USD
CY2021Q3	iesc	Controlling Shareholder Ownership Percentage ControllingShareholderOwnershipPercentage	0.56
CY2021	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	8000	USD
CY2021	us-gaap	Revenues Revenues	1536493000	USD
CY2021	us-gaap	Revenues Revenues	1536493000	USD
CY2020	us-gaap	Revenues Revenues	1190856000	USD
CY2019	us-gaap	Revenues Revenues	1076996000	USD
CY2021	us-gaap	Revenues Revenues	1536493000	USD
CY2021	us-gaap	Revenues Revenues	1536493000	USD
CY2020	us-gaap	Revenues Revenues	1190856000	USD
CY2019	us-gaap	Revenues Revenues	1076996000	USD
CY2021Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	20445000	USD
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	47906000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	34035000	USD
CY2021Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	713274000	USD
CY2021Q3	iesc	Performance Obligation Next12 Months PerformanceObligationNext12Months	650500000	USD
CY2021Q3	us-gaap	Land Land	1436000	USD
CY2020Q3	us-gaap	Land Land	1436000	USD
CY2020Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	34544000	USD
CY2021Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1312000	USD
CY2020Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	382000	USD
CY2021Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	15445000	USD
CY2020Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	14378000	USD
CY2021Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	48443000	USD
CY2020Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	32695000	USD
CY2021Q3	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	8555000	USD
CY2020Q3	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	8496000	USD
CY2021Q3	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	1571000	USD
CY2020Q3	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	1746000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	75450000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	58751000	USD
CY2021Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	41308000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	35454000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24589000	USD
CY2021	us-gaap	Depreciation Depreciation	8090000	USD
CY2020	us-gaap	Depreciation Depreciation	6084000	USD
CY2019	us-gaap	Depreciation Depreciation	5607000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	66658000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	41599000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	33206000	USD
CY2021	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-315000	USD
CY2020	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-194000	USD
CY2019	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	0	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-56000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-575000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-256000	USD
CY2021	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	66287000	USD
CY2020	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	40830000	USD
CY2019	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	32950000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20790307	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20795892	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	21082012	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	296125	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	296518	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	233233	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21086432	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21092410	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21315245	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.19
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.96
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.56
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.15
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.94
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.55
CY2021Q3	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	136967000	USD
CY2020Q3	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	93315000	USD
CY2021Q3	us-gaap	Accrued Salaries Current And Noncurrent AccruedSalariesCurrentAndNoncurrent	61109000	USD
CY2020Q3	us-gaap	Accrued Salaries Current And Noncurrent AccruedSalariesCurrentAndNoncurrent	53933000	USD
CY2021Q3	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	5787000	USD
CY2020Q3	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	6254000	USD
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13973000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	11056000	USD
CY2021Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	31278000	USD
CY2020Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	22152000	USD
CY2021Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	249114000	USD
CY2020Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	186710000	USD
CY2021Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	937000	USD
CY2020Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	766000	USD
CY2021Q3	us-gaap	Investments Investments	10000	USD
CY2020Q3	us-gaap	Investments Investments	0	USD
CY2021Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	3927000	USD
CY2020Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1600000	USD
CY2021Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2175000	USD
CY2020Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	3414000	USD
CY2021Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7049000	USD
CY2020Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	5780000	USD
CY2021Q3	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	40339000	USD
CY2020Q3	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	12000	USD
CY2021Q3	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	656000	USD
CY2021Q3	us-gaap	Other Long Term Debt Noncurrent OtherLongTermDebtNoncurrent	63000	USD
CY2020Q3	us-gaap	Other Long Term Debt Noncurrent OtherLongTermDebtNoncurrent	205000	USD
CY2021Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	39746000	USD
CY2020Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	217000	USD
CY2020Q3	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	736000	USD
CY2021Q3	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	40339000	USD
CY2021Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	4527000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	55134000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0138
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	962000	USD
CY2020	us-gaap	Interest Expense Debt InterestExpenseDebt	777000	USD
CY2019	us-gaap	Interest Expense Debt InterestExpenseDebt	1857000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	100000000	USD
CY2021	us-gaap	Debt Instrument Covenant Compliance DebtInstrumentCovenantCompliance	20,000
CY2021Q3	iesc	Liquidity Liquidity	78239000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	55134000	USD
CY2021Q3	iesc	Fixed Charge Coverage Ratio FixedChargeCoverageRatio	12.0
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13973000	USD
CY2021Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1033000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3840000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	266000	USD
CY2021Q3	iesc	Lessee Total Lease Liability Payments Due In Next Twelve Months LesseeTotalLeaseLiabilityPaymentsDueInNextTwelveMonths	4106000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	13481000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1055000	USD
CY2021Q3	iesc	Total Lease Liability Payments Year Two TotalLeaseLiabilityPaymentsYearTwo	14536000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	9466000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1043000	USD
CY2021Q3	iesc	Total Lease Liability Payments Year Three TotalLeaseLiabilityPaymentsYearThree	10509000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6430000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	999000	USD
CY2021Q3	iesc	Total Lease Liability Payments Year Four TotalLeaseLiabilityPaymentsYearFour	7429000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4632000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	715000	USD
CY2021Q3	iesc	Total Lease Liability Payments Year Five TotalLeaseLiabilityPaymentsYearFive	5347000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	9411000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	181000	USD
CY2021Q3	iesc	Total Lease Liability Payments Due After Year Five TotalLeaseLiabilityPaymentsDueAfterYearFive	9592000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	47260000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	4259000	USD
CY2021Q3	iesc	Total Lease Liability Payments Due TotalLeaseLiabilityPaymentsDue	51519000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4637000	USD
CY2021Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	354000	USD
CY2021Q3	iesc	Total Lease Liability Undiscounted Excess Amount TotalLeaseLiabilityUndiscountedExcessAmount	4991000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	42623000	USD
CY2021Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	3905000	USD
CY2021Q3	iesc	Total Lease Liability TotalLeaseLiability	46528000	USD
CY2021	iesc	Minimumpaymentsforleasesnotyetcommenced Minimumpaymentsforleasesnotyetcommenced	7296000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	13405000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	12910000	USD
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	634000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	203000	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	119000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	47000	USD
CY2021	iesc	Finance Lease Cost FinanceLeaseCost	753000	USD
CY2020	iesc	Finance Lease Cost FinanceLeaseCost	250000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1575000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1163000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	1286000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	827000	USD
CY2021	us-gaap	Lease Cost LeaseCost	17019000	USD
CY2020	us-gaap	Lease Cost LeaseCost	15150000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	15011000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	12934000	USD
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	119000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	47000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	24606000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	10640000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	2962000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1803000	USD
CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y3M18D
CY2021Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y2M12D
CY2020Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y4M24D
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.037
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.039
CY2021Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.043
CY2020Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.051
CY2021	us-gaap	Payments For Rent PaymentsForRent	14980000	USD
CY2020	us-gaap	Payments For Rent PaymentsForRent	14073000	USD
CY2019	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	10553000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-39000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1330000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	11678000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	9317000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	5908000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4505000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3657000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2312000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	46000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-4195000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-227000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16231000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8740000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6663000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	17830000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	10352000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	8430000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	658000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1974000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1277000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3876000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2662000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2009000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	261000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	715000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	75000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	556000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-118000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-3334000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-83000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-2898000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-1313000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-3967000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-2241000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-1787000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-144000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-161000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-303000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16231000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8740000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6663000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	541000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	592000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	17134000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	14619000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	6445000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	22623000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1285000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1764000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	210000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	210000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1079000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	897000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	1000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	74000	USD
CY2021Q3	iesc	Deferred Tax Assets Leases DeferredTaxAssetsLeases	9634000	USD
CY2020Q3	iesc	Deferred Tax Assets Leases DeferredTaxAssetsLeases	7681000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2914000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2444000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	39243000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	50904000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	592000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	710000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	38651000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	50194000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	509000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	517000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	8765000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	7926000	USD
CY2021Q3	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	120248000	USD
CY2021Q3	iesc	Operating Loss Carryforwards Attributable To Goodwill Amortization OperatingLossCarryforwardsAttributableToGoodwillAmortization	103681000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	61396000	USD
CY2021Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	19009000	USD
CY2021Q3	iesc	Reorganization Of Goodwill Excess Tax Basis ReorganizationOfGoodwillExcessTaxBasis	3869000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	9615000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	7677000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	753000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	271000	USD
CY2021Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	19642000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	16391000	USD
CY2021Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	19009000	USD
CY2020Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	33803000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-118000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-3334000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	55000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24861000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	26294000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	59000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	111000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	20000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	29000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3061000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1573000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21879000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24861000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21879000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24861000	USD
CY2021Q3	us-gaap	Increase In Unrecognized Tax Benefits Is Reasonably Possible IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	159000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	50000	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
CY2020	us-gaap	Revenues Revenues	1190856000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	962897000	USD
CY2020	us-gaap	Gross Profit GrossProfit	227959000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	170911000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	6976000	USD
CY2020	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	11000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	0	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	50083000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	12508000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4745000	USD
CY2020Q3	us-gaap	Assets Assets	560528000	USD
CY2019	us-gaap	Revenues Revenues	1076996000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	894893000	USD
CY2019	us-gaap	Gross Profit GrossProfit	182103000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	140575000	USD
CY2019	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	374000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	52000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	41850000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9557000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	6300000	USD
CY2019Q3	us-gaap	Assets Assets	445258000	USD
CY2021Q3	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	817452	shares
CY2021Q3	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
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	124205	shares
CY2021	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	44.40
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	263160	shares
CY2020	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	23.29
CY2021	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	32323	shares
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	124205	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	13996	shares
CY2020	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	56806	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	208597	shares
CY2020Q3	us-gaap	Shares Issued SharesIssued	5750	shares
CY2021	us-gaap	Employee Service Share Based Compensation Cash Flow Effect Cash Used To Settle Awards EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards	1100000	USD
CY2021Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	167000	USD
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	38936	shares
CY2021Q3	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	4050000	USD
CY2020Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	766000	USD
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	283195	shares
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	0	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted	0	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted	69338	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted	283195	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	8183	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	105000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	0	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	13996	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	208597	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	0	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	16757	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	38936	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	283195	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	21.56
CY2021Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	937000	USD
CY2021Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	806000	USD
CY2021Q3	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	4181000	USD
CY2020Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	644000	USD
CY2020Q3	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	122000	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	0	USD
CY2020Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	11000	USD
CY2021	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	8000	USD
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3386000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2326000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2144000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Funded Percentage DefinedBenefitPlanFundedPercentage	0.8438
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-11000	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	0	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	4074000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-107000	USD
CY2021Q3	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	4181000	USD
CY2021Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	5819000	USD
CY2020Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	3232000	USD
CY2021Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	6848000	USD
CY2020Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	4894000	USD
CY2021Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1554000	USD
CY2020Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1186000	USD
CY2021Q3	us-gaap	Other Inventory OtherInventory	54352000	USD
CY2020Q3	us-gaap	Other Inventory OtherInventory	15577000	USD
CY2021Q3	us-gaap	Inventory Net InventoryNet	68573000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	24889000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	50622000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	10117000	USD
CY2020	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-6976000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	53763000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	38632000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	92395000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	117538000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	31919000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	85619000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	58026000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	18669000	USD
CY2020Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	39357000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13191000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6424000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3950000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	13683000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	13153000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	12810000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	12370000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	12030000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	21573000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	85619000	USD
CY2021Q3	us-gaap	Loss Contingency Discounted Amount Of Insurance Related Assessment Liability LossContingencyDiscountedAmountOfInsuranceRelatedAssessmentLiability	5787000	USD
CY2020Q3	us-gaap	Loss Contingency Discounted Amount Of Insurance Related Assessment Liability LossContingencyDiscountedAmountOfInsuranceRelatedAssessmentLiability	6254000	USD
CY2021Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	8000	USD
CY2020Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	36000	USD
CY2021Q3	iesc	Estimatedcostofcompletionofbondedproject Estimatedcostofcompletionofbondedproject	80285000	USD
CY2021Q3	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	12292000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Less Noncontrolling Interest BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest	92463000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Less Noncontrolling Interest BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest	92463000	USD
CY2021Q3	us-gaap	Escrow Deposit EscrowDeposit	10916000	USD
CY2021	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	4500000	USD
CY2021	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	4500000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	4074000	USD
CY2021	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	6508000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets	36348000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	11965000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets Other Than Goodwill BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill	59648000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	38632000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	837000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities	29149000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities	723000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities	3282000	USD
CY2021	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	21813000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Less Noncontrolling Interest BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest	92463000	USD
CY2021Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	38632000	USD
CY2021Q3	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	20741000	USD
CY2021	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P6Y4M24D
CY2021	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	179628000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	28952000	USD
CY2020	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	21836000	USD
CY2020	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	812000	USD
CY2021	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1631057000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1441933000	USD
CY2021	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	69928000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	49257000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	100000000	USD
CY2021	us-gaap	Debt Instrument Covenant Compliance DebtInstrumentCovenantCompliance	20,000

Files In Submission

Name	View Source	Status
0001048268-21-000162-index-headers.html	Edgar Link	pending
0001048268-21-000162-index.html	Edgar Link	pending
0001048268-21-000162.txt	Edgar Link	pending
0001048268-21-000162-xbrl.zip	Edgar Link	pending
amendmentno9andjoindertose.htm	Edgar Link	pending
descriptionofcapitalstock.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
iesc-20210930.htm	Edgar Link	pending
iesc-20210930.xsd	Edgar Link	pending
iesc-20210930_cal.xml	Edgar Link	unprocessable
iesc-20210930_def.xml	Edgar Link	unprocessable
iesc-20210930_g1.jpg	Edgar Link	pending
iesc-20210930_g2.jpg	Edgar Link	pending
iesc-20210930_htm.xml	Edgar Link	completed
iesc-20210930_lab.xml	Edgar Link	unprocessable
iesc-20210930_pre.xml	Edgar Link	unprocessable
MetaLinks.json	Edgar Link	pending
q42021ex211.htm	Edgar Link	pending
q42021ex231.htm	Edgar Link	pending
q42021ex311.htm	Edgar Link	pending
q42021ex312.htm	Edgar Link	pending
q42021ex321.htm	Edgar Link	pending
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R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$IESC
IES Holdings, Inc. Stock $iesc

2021 Q3 Form 10-K Financial Statement

#000104826821000162 Filed on December 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IESC IES Holdings, Inc. Stock $iesc

2021 Q3 Form 10-K Financial Statement

#000104826821000162 Filed on December 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IESC
IES Holdings, Inc. Stock $iesc