$IESC
IES Holdings, Inc. Stock $iesc

$iesc Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-Q Financial Statement

#000104826821000065 Filed on April 30, 2021

Income Statement

Concept	2021 Q1	2020 Q1	2019 Q4
Revenue	$332.0M	$291.3M	$276.0M
YoY Change	13.97%	13.38%	13.21%
Cost Of Revenue	$267.1M	$240.0M	$225.8M
YoY Change	11.28%	12.32%	11.66%
Gross Profit	$64.87M	$51.26M	$50.22M
YoY Change	26.55%	18.57%	20.71%
Gross Profit Margin	19.54%	17.6%	18.19%
Selling, General & Admin	$47.66M	$42.04M	$37.87M
YoY Change	13.37%	19.86%	18.03%
% of Gross Profit	73.46%	82.0%	75.42%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$5.828M	$3.235M	$2.362M
YoY Change	80.15%	30.76%	-0.42%
% of Gross Profit	8.98%	6.31%	4.7%
Operating Expenses	$47.66M	$42.04M	$37.87M
YoY Change	13.37%	19.86%	18.03%
Operating Profit	$17.13M	$9.229M	$12.38M
YoY Change	85.59%	12.33%	30.53%
Interest Expense	$225.0K	$320.0K	$239.0K
YoY Change	-29.69%	-40.19%	-56.31%
% of Operating Profit	1.31%	3.47%	1.93%
Other Income/Expense, Net	$51.00K	-$268.0K	-$141.0K
YoY Change	-119.03%	-339.29%	200.0%
Pretax Income	$16.95M	$8.641M	$12.00M
YoY Change	96.2%	10.88%	34.97%
Income Tax	$3.611M	$2.428M	$3.469M
% Of Pretax Income	21.3%	28.1%	28.91%
Net Earnings	$12.84M	$6.231M	$8.502M
YoY Change	106.0%	13.52%	23.5%
Net Earnings / Revenue	3.87%	2.14%	3.08%
Basic Earnings Per Share	$0.59	$0.30	$0.40
Diluted Earnings Per Share	$0.58	$0.29	$0.39
COMMON SHARES
Basic Shares Outstanding	20.78M shares	20.85M shares	20.88M shares
Diluted Shares Outstanding	21.07M shares	21.12M shares	21.15M shares

Balance Sheet

Concept	2021 Q1	2020 Q1	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$37.50M	$43.80M	$27.30M
YoY Change	-14.38%	170.37%	32.52%
Cash & Equivalents	$37.52M	$43.80M	$27.30M
Short-Term Investments
Other Short-Term Assets	$19.50M	$12.70M	$12.10M
YoY Change	53.54%	16.51%	-6.92%
Inventory	$38.91M	$22.29M	$19.86M
Prepaid Expenses
Receivables	$208.8M	$180.6M	$169.6M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$365.8M	$323.8M	$289.7M
YoY Change	12.95%	23.16%	9.01%
LONG-TERM ASSETS
Property, Plant & Equipment	$28.73M	$26.06M	$25.61M
YoY Change	10.23%	-1.72%	-1.96%
Goodwill	$75.33M	$60.54M	$50.62M
YoY Change	24.42%	19.6%	-0.16%
Intangibles	$73.33M	$43.81M	$25.74M
YoY Change	67.37%	53.94%	-12.88%
Long-Term Investments
YoY Change
Other Assets	$6.604M	$3.423M	$5.150M
YoY Change	92.93%	-39.54%	-13.62%
Total Long-Term Assets	$249.9M	$202.5M	$180.1M
YoY Change	23.39%	31.21%	14.47%
TOTAL ASSETS
Total Short-Term Assets	$365.8M	$323.8M	$289.7M
Total Long-Term Assets	$249.9M	$202.5M	$180.1M
Total Assets	$615.7M	$526.3M	$469.9M
YoY Change	16.97%	26.14%	11.04%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$177.5M	$153.5M	$129.3M
YoY Change	15.64%	18.35%	2.7%
Accrued Expenses	$13.30M	$11.20M	$11.00M
YoY Change	18.75%
Deferred Revenue	$60.26M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$600.0K	$200.0K
YoY Change	200.0%
Total Short-Term Liabilities	$251.6M	$210.8M	$185.9M
YoY Change	19.34%	29.62%	15.36%
LONG-TERM LIABILITIES
Long-Term Debt	$140.0K	$28.99M	$319.0K
YoY Change	-99.52%	47.35%	-98.92%
Other Long-Term Liabilities	$14.84M	$2.445M	$2.206M
YoY Change	506.95%	-33.11%	-41.9%
Total Long-Term Liabilities	$14.98M	$31.43M	$2.525M
YoY Change	-52.34%	34.74%	-92.44%
TOTAL LIABILITIES
Total Short-Term Liabilities	$251.6M	$210.8M	$185.9M
Total Long-Term Liabilities	$14.98M	$31.43M	$2.525M
Total Liabilities	$293.5M	$265.7M	$212.2M
YoY Change	10.46%	42.87%	9.05%
SHAREHOLDERS EQUITY
Retained Earnings	$131.2M	$80.33M	$74.06M
YoY Change	63.35%	79.36%	88.44%
Common Stock	$220.0K	$220.0K	$220.0K
YoY Change	0.0%	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$23.64M	$15.64M	$12.00M
YoY Change	51.12%	85.28%	34.87%
Treasury Stock Shares	1.211M shares	977.9K shares	826.4K shares
Shareholders Equity	$308.5M	$257.8M	$254.8M
YoY Change
Total Liabilities & Shareholders Equity	$615.7M	$526.3M	$469.9M
YoY Change	16.97%	26.14%	11.04%

Cashflow Statement

Concept	2021 Q1	2020 Q1	2019 Q4
OPERATING ACTIVITIES
Net Income	$12.84M	$6.231M	$8.502M
YoY Change	106.0%	13.52%	23.5%
Depreciation, Depletion And Amortization	$5.828M	$3.235M	$2.362M
YoY Change	80.15%	30.76%	-0.42%
Cash From Operating Activities	$28.11M	$21.70M	$11.02M
YoY Change	29.54%	101.49%	-907.4%
INVESTING ACTIVITIES
Capital Expenditures	-$1.820M	-$1.510M	-$1.390M
YoY Change	20.53%	-17.93%	-166.57%
Acquisitions
YoY Change
Other Investing Activities	-$640.0K	-$28.95M	$50.00K
YoY Change	-97.79%	-289600.0%
Cash From Investing Activities	-$2.460M	-$30.45M	-$1.345M
YoY Change	-91.92%	1563.93%	-35.49%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$858.0K
YoY Change			-61.19%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-15.41M	25.26M	-$1.315M
YoY Change	-161.01%	-289.21%	-40.74%
NET CHANGE
Cash From Operating Activities	28.11M	21.70M	$11.02M
Cash From Investing Activities	-2.460M	-30.45M	-$1.345M
Cash From Financing Activities	-15.41M	25.26M	-$1.315M
Net Change In Cash	10.24M	16.51M	$8.361M
YoY Change	-37.98%	-474.38%	-247.49%
FREE CASH FLOW
Cash From Operating Activities	$28.11M	$21.70M	$11.02M
Capital Expenditures	-$1.820M	-$1.510M	-$1.390M
Free Cash Flow	$29.93M	$23.21M	$12.41M
YoY Change	28.95%	84.06%	-459.43%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001048268
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-03-31
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-13783
	dei	Entity Registrant Name EntityRegistrantName	IES Holdings, Inc.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	76-0542208
	dei	Entity Address Address Line1 EntityAddressAddressLine1	5433 Westheimer Road
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 500
	dei	Entity Address City Or Town EntityAddressCityOrTown	Houston
	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77056
	dei	City Area Code CityAreaCode	713
	dei	Local Phone Number LocalPhoneNumber	860-1500
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	20840382	shares
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	37520000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	53577000	USD
CY2021Q1	us-gaap	Restricted Cash RestrictedCash	4813000	USD
CY2020Q3	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1064000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2613000	USD
CY2021Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	208784000	USD
CY2020Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	213016000	USD
CY2021Q1	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	36806000	USD
CY2020Q3	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	40878000	USD
CY2021Q1	us-gaap	Inventory Net InventoryNet	38908000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	24889000	USD
CY2021Q1	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	24239000	USD
CY2020Q3	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	29937000	USD
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CY2021Q1	us-gaap	Assets Current AssetsCurrent	365762000	USD
CY2020Q3	us-gaap	Assets Current AssetsCurrent	371450000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	28731000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24589000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	75327000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	53763000	USD
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	73325000	USD
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CY2021Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	25531000	USD
CY2020Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	33803000	USD
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CY2021Q1	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	60257000	USD
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CY2020Q3	us-gaap	Liabilities Current LiabilitiesCurrent	242449000	USD
CY2021Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	140000	USD
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CY2020Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	12215000	USD
CY2021Q1	us-gaap	Liabilities Liabilities	293488000	USD
CY2020Q3	us-gaap	Liabilities Liabilities	275411000	USD
CY2021Q1	us-gaap	Minority Interest MinorityInterest	13629000	USD
CY2020Q3	us-gaap	Minority Interest MinorityInterest	1804000	USD
CY2020Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
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CY2021Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
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CY2021Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22049529	shares
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CY2021Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	20838844	shares
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CY2021Q1	us-gaap	Common Stock Value CommonStockValue	220000	USD
CY2020Q3	us-gaap	Common Stock Value CommonStockValue	220000	USD
CY2021Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	1210685	shares
CY2020Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	1287134	shares
CY2021Q1	us-gaap	Treasury Stock Value TreasuryStockValue	23639000	USD
CY2020Q3	us-gaap	Treasury Stock Value TreasuryStockValue	24499000	USD
CY2021Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	200732000	USD
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CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	308535000	USD
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CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	615652000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	560528000	USD
CY2021Q1	us-gaap	Revenues Revenues	331961000	USD
CY2020Q1	us-gaap	Revenues Revenues	291277000	USD
CY2021Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	267087000	USD
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CY2021Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	73000	USD
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	73000	USD
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CY2021Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	17128000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	9229000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	225000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	320000	USD
CY2021Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	51000	USD
CY2020Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-268000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	16954000	USD
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CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3611000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2428000	USD
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CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-18000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	12836000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	6231000	USD
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CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21071059	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21122310	shares
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	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	73000	USD
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	0	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-8000	USD
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	us-gaap	Operating Income Loss OperatingIncomeLoss	33031000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	21608000	USD
	us-gaap	Interest Expense InterestExpense	397000	USD
	us-gaap	Interest Expense InterestExpense	559000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	169000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-409000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32803000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	20640000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7250000	USD
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	us-gaap	Profit Loss ProfitLoss	14743000	USD
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	us-gaap	Net Income Loss NetIncomeLoss	24934000	USD
	us-gaap	Net Income Loss NetIncomeLoss	14733000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.16
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20756879	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20865460	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21059088	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21132519	shares
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	295462000	USD
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CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	12836000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	308535000	USD
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CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4037000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	34000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	754000	USD
CY2020Q1	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	45000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	6231000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	257805000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	283313000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	695000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1700000	USD
	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-503000	USD
CY2021Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-214000	USD
	us-gaap	Net Income Loss NetIncomeLoss	24934000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	246248000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-11943000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4894000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	34000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1684000	USD
	us-gaap	Net Income Loss NetIncomeLoss	14733000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	257805000	USD
	us-gaap	Profit Loss ProfitLoss	25553000	USD
	us-gaap	Profit Loss ProfitLoss	14743000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	61000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	281000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	94000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	204000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9848000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5597000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-8000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	37000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	1700000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	1684000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5433000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4543000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-8595000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	9771000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	220000	USD
	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-5699000	USD
	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-2847000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-1053000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	8942000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	83000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-1543000	USD
	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-9324000	USD
	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-2035000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	4518000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	4113000	USD
	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	1626000	USD
	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-195000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	48358000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	32721000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3004000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2898000	USD
	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	68000	USD
	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	53000	USD
	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	55468000	USD
	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	28952000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-58404000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31797000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	584483000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	592422000	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	584495000	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	563093000	USD
	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	-240000	USD
	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	-71000	USD
	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-251000	USD
	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-457000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	695000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4894000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	34000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1198000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	23941000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-11244000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	24865000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	53577000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	18934000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	42333000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	43799000	USD
	us-gaap	Interest Paid InterestPaid	262000	USD
	us-gaap	Interest Paid InterestPaid	410000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2182000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	522000	USD
CY2021Q1	us-gaap	Redeemable Noncontrolling Interest Equity Redemption Value RedeemableNoncontrollingInterestEquityRedemptionValue	12874000	USD
CY2021Q1	us-gaap	Restricted Cash RestrictedCash	4813000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	70000	USD
CY2021Q1	iesc	Controlling Shareholder Ownership Percentage ControllingShareholderOwnershipPercentage	0.56
CY2021Q1	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	8000	USD
CY2021Q1	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	94000	USD
CY2021Q1	us-gaap	Revenues Revenues	331961000	USD
CY2020Q1	us-gaap	Revenues Revenues	291277000	USD
	us-gaap	Revenues Revenues	646799000	USD
	us-gaap	Revenues Revenues	567320000	USD
CY2021Q1	us-gaap	Revenues Revenues	331961000	USD
CY2020Q1	us-gaap	Revenues Revenues	291277000	USD
	us-gaap	Revenues Revenues	646799000	USD
	us-gaap	Revenues Revenues	567320000	USD
CY2021Q1	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	12302000	USD
CY2021Q1	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	28385000	USD
CY2020Q1	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	6175000	USD
CY2020Q1	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	21473000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	33740000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	26403000	USD
CY2021Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	613893000	USD
CY2021Q1	iesc	Performance Obligation Next12 Months PerformanceObligationNext12Months	458306000	USD
CY2021Q1	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	0	USD
CY2020Q3	us-gaap	Long Term Loans From Bank LongTermLoansFromBank	12000	USD
CY2021Q1	us-gaap	Other Long Term Debt Noncurrent OtherLongTermDebtNoncurrent	140000	USD
CY2020Q3	us-gaap	Other Long Term Debt Noncurrent OtherLongTermDebtNoncurrent	205000	USD
CY2021Q1	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	6964000	USD
CY2021Q1	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	93036000	USD
CY2021Q1	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	100000000	USD
CY2021Q1	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	12207000	USD
CY2021Q1	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-621000	USD
CY2020Q1	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	45000	USD
CY2021Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	8000	USD
CY2020Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	101000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	12836000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	6231000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20780006	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20847245	shares
CY2021Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	291053	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	275065	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21071059	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21122310	shares
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	24411000	USD
	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	14510000	USD
	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-503000	USD
	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	0	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	20000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	223000	USD
	us-gaap	Net Income Loss NetIncomeLoss	24934000	USD
	us-gaap	Net Income Loss NetIncomeLoss	14733000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20756879	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20865460	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	302209	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	267059	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21059088	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21132519	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.16
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
CY2021Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1822000	USD
CY2021Q1	us-gaap	Assets Assets	615652000	USD
CY2021Q1	us-gaap	Revenues Revenues	331961000	USD
CY2021Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	267087000	USD
CY2021Q1	us-gaap	Gross Profit GrossProfit	64874000	USD
CY2021Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	47655000	USD
CY2021Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	73000	USD
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	73000	USD
CY2021Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-18000	USD
CY2021Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	17128000	USD
CY2021Q1	us-gaap	Depreciation Depreciation	5828000	USD
CY2020Q1	us-gaap	Revenues Revenues	291277000	USD
CY2020Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	240013000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	51264000	USD
CY2020Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	42036000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-8000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	33031000	USD
	us-gaap	Depreciation Depreciation	9848000	USD
CY2020Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	9229000	USD
CY2020Q1	us-gaap	Depreciation Depreciation	3235000	USD
CY2020Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1507000	USD
CY2020Q1	us-gaap	Assets Assets	526344000	USD
	us-gaap	Revenues Revenues	646799000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	523246000	USD
	us-gaap	Gross Profit GrossProfit	123553000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	90441000	USD
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	73000	USD
CY2021Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	73000	USD
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	73000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3004000	USD
CY2021Q1	us-gaap	Assets Assets	615652000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted	0	shares
	us-gaap	Revenues Revenues	567320000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	465841000	USD
	us-gaap	Gross Profit GrossProfit	101479000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	79908000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	37000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	21608000	USD
	us-gaap	Depreciation Depreciation	5597000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2898000	USD
CY2020Q1	us-gaap	Assets Assets	526344000	USD
CY2021Q1	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	828238	shares
CY2015Q3	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
CY2020Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	22.60
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	22.59
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	16882	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	13996	shares
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	17427	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	8183	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	13996	shares
CY2021Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	238000	USD
CY2021Q1	us-gaap	Shares Outstanding SharesOutstanding	291586	shares
	us-gaap	Stock Issued During Period Shares Share Based Compensation Forfeited StockIssuedDuringPeriodSharesShareBasedCompensationForfeited	114067	shares
	iesc	Sharesvested Sharesvested	87769	shares
CY2021Q1	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	773000	USD
CY2020Q1	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	697000	USD
	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1479000	USD
	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1082000	USD
CY2021Q1	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	601000	USD
CY2020Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	719000	USD
CY2021Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	892000	USD
CY2021Q1	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	765000	USD
CY2021Q1	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	4147000	USD
CY2021Q1	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	4274000	USD
CY2020Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	766000	USD
CY2020Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	644000	USD
CY2020Q3	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	122000	USD
CY2021Q1	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	4147000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	4074000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	73000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	24889000	USD
CY2021Q1	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	4147000	USD
CY2021Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	4509000	USD
CY2020Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	3232000	USD
CY2021Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	5540000	USD
CY2020Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	4894000	USD
CY2021Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1599000	USD
CY2020Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1186000	USD
CY2021Q1	us-gaap	Other Inventory OtherInventory	27260000	USD
CY2020Q3	us-gaap	Other Inventory OtherInventory	15577000	USD
CY2021Q1	us-gaap	Inventory Net InventoryNet	38908000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	21564000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	53763000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	75327000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	97970000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	24645000	USD
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	73325000	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
CY2021Q1	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	6136000	USD
CY2020Q3	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	6254000	USD
CY2021Q1	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	37000	USD
CY2020Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	36000	USD
CY2021Q1	iesc	Estimatedcostofcompletionofbondedproject Estimatedcostofcompletionofbondedproject	87698000	USD
CY2021Q1	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	11569000	USD
CY2021Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13256000	USD
CY2021Q1	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	613000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	11056000	USD
CY2020Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	418000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	10353000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	475000	USD
CY2021Q1	iesc	Lessee Total Lease Liability Payments Remainder Of Fiscal Year LesseeTotalLeaseLiabilityPaymentsRemainderOfFiscalYear	10828000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	11349000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	613000	USD
CY2021Q1	iesc	Total Lease Liability Payments Year Two TotalLeaseLiabilityPaymentsYearTwo	11962000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	7458000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	606000	USD
CY2021Q1	iesc	Total Lease Liability Payments Year Three TotalLeaseLiabilityPaymentsYearThree	8064000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4701000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	561000	USD
CY2021Q1	iesc	Total Lease Liability Payments Year Four TotalLeaseLiabilityPaymentsYearFour	5262000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3297000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	277000	USD
CY2021Q1	iesc	Total Lease Liability Payments Year Five TotalLeaseLiabilityPaymentsYearFive	3574000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	7410000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	5000	USD
CY2021Q1	iesc	Total Lease Liability Payments Due After Year Five TotalLeaseLiabilityPaymentsDueAfterYearFive	7415000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	44568000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2537000	USD
CY2021Q1	iesc	Total Lease Liability Payments Due TotalLeaseLiabilityPaymentsDue	47105000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4443000	USD
CY2021Q1	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	231000	USD
CY2021Q1	iesc	Total Lease Liability Undiscounted Excess Amount TotalLeaseLiabilityUndiscountedExcessAmount	4674000	USD
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	40125000	USD
CY2021Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	2306000	USD
CY2021Q1	iesc	Total Lease Liability TotalLeaseLiability	42431000	USD
CY2021Q1	iesc	Operating Leasesnotyet Commenced OperatingLeasesnotyetCommenced	4175000	USD
CY2021Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	3804000	USD
CY2020Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	2917000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	7049000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	5940000	USD
CY2021Q1	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	133000	USD
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	60000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	242000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	60000	USD
CY2021Q1	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	26000	USD
CY2020Q1	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	15000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	48000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	15000	USD
CY2021Q1	iesc	Finance Lease Cost FinanceLeaseCost	159000	USD
CY2020Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	497000	USD
CY2020Q1	iesc	Finance Lease Cost FinanceLeaseCost	75000	USD
	iesc	Finance Lease Cost FinanceLeaseCost	290000	USD
	iesc	Finance Lease Cost FinanceLeaseCost	75000	USD
CY2021Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	237000	USD
CY2020Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	279000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	550000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	475000	USD
CY2021Q1	us-gaap	Variable Lease Cost VariableLeaseCost	343000	USD
CY2020Q1	us-gaap	Variable Lease Cost VariableLeaseCost	251000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	634000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	428000	USD
CY2021Q1	us-gaap	Lease Cost LeaseCost	4543000	USD
CY2020Q1	us-gaap	Lease Cost LeaseCost	3522000	USD
	us-gaap	Lease Cost LeaseCost	8523000	USD
	us-gaap	Lease Cost LeaseCost	6918000	USD
CY2021Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	3654000	USD
CY2020Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	3181000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	7649000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	6298000	USD
CY2021Q1	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	0	USD
CY2020Q1	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	15000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	48000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	15000	USD
CY2021Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6247000	USD
CY2020Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2557000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	14861000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	8144000	USD
CY2021Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	396000	USD
CY2021Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y10M24D
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y3M18D
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	960000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	928000	USD
CY2021Q1	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y2M12D
CY2020Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y4M24D
CY2021Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.038
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.039
CY2021Q1	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.047
CY2020Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.051
	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	55468000	USD
CY2021Q1	us-gaap	Escrow Deposit EscrowDeposit	5799000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	4500000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	4500000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	4074000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets	14980000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	4867000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets Other Than Goodwill BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill	39995000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	21564000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	296000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities	12027000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Capital Lease Obligation BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation	342000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities	3071000	USD
	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	10794000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Less Noncontrolling Interest BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest	55468000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	21564000	USD
CY2021Q1	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	11329000	USD
	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P6Y2M12D
	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	44539000	USD
	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	2437000	USD
CY2020Q4	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	28952000	USD
CY2021Q1	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	331961000	USD
CY2020Q1	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	331615000	USD
	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	670132000	USD
	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	648411000	USD
CY2021Q1	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	12878000	USD
CY2020Q1	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	9321000	USD
	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	25145000	USD
	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	19212000	USD
CY2021Q1	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	11569000	USD

Files In Submission

Name	View Source	Status
0001048268-21-000065-index-headers.html	Edgar Link	pending
0001048268-21-000065-index.html	Edgar Link	pending
0001048268-21-000065.txt	Edgar Link	pending
0001048268-21-000065-xbrl.zip	Edgar Link	pending
amendedandrestatedbylawsof.htm	Edgar Link	pending
amendedandrestatedseveranc.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
iesc-20210331.htm	Edgar Link	pending
iesc-20210331.xsd	Edgar Link	pending
iesc-20210331_cal.xml	Edgar Link	unprocessable
iesc-20210331_def.xml	Edgar Link	unprocessable
iesc-20210331_g1.gif	Edgar Link	pending
iesc-20210331_htm.xml	Edgar Link	completed
iesc-20210331_lab.xml	Edgar Link	unprocessable
iesc-20210331_pre.xml	Edgar Link	unprocessable
joinderconsentandsixthamen.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
q22021ex311.htm	Edgar Link	pending
q22021ex312.htm	Edgar Link	pending
q22021ex321.htm	Edgar Link	pending
q22021ex322.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
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R5.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
seventhamendmenttosecondam.htm	Edgar Link	pending
Show.js	Edgar Link	pending

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$IESC
IES Holdings, Inc. Stock $iesc

2021 Q1 Form 10-Q Financial Statement

#000104826821000065 Filed on April 30, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IESC IES Holdings, Inc. Stock $iesc

2021 Q1 Form 10-Q Financial Statement

#000104826821000065 Filed on April 30, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IESC
IES Holdings, Inc. Stock $iesc