$IESC
IES Holdings, Inc. Stock $iesc

$iesc Overview Financials Valuation SEC Filings Company Website

2016 Q4 Form 10-K Financial Statement

#000119312516789187 Filed on December 09, 2016

Income Statement

Concept	2016 Q4	2016 Q3	2015 Q4
Revenue	$192.2M	$205.6M	$150.8M
YoY Change	27.47%	28.78%	10.58%
Cost Of Revenue	$157.0M	$168.1M	$123.1M
YoY Change	27.5%	30.01%	8.36%
Gross Profit	$35.18M	$37.54M	$27.63M
YoY Change	27.32%	23.37%	21.71%
Gross Profit Margin	18.31%	18.25%	18.33%
Selling, General & Admin	$28.20M	$28.10M	$22.51M
YoY Change	25.27%	23.25%	20.38%
% of Gross Profit	80.15%	74.86%	81.46%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.059M	$2.160M	$816.0K
YoY Change	152.33%	208.57%	40.93%
% of Gross Profit	5.85%	5.75%	2.95%
Operating Expenses	$28.20M	$28.40M	$22.51M
YoY Change	25.27%	25.11%	20.38%
Operating Profit	$6.982M	$9.138M	$5.121M
YoY Change	36.34%	18.26%	28.09%
Interest Expense	-$400.0K	-$400.0K	$293.0K
YoY Change	-236.52%	33.33%	1.74%
% of Operating Profit	-5.73%	-4.38%	5.72%
Other Income/Expense, Net	$0.00	$0.00	$0.00
YoY Change
Pretax Income	$6.600M	$8.800M	$4.857M
YoY Change	35.89%	20.55%	29.94%
Income Tax	$2.629M	-$93.20M	-$942.0K
% Of Pretax Income	39.83%	-1059.09%	-19.39%
Net Earnings	$3.872M	$102.0M	$5.799M
YoY Change	-33.23%	1263.55%	76.15%
Net Earnings / Revenue	2.01%	49.59%	3.85%
Basic Earnings Per Share		$4.75	$0.27
Diluted Earnings Per Share	$180.6K	$4.74	$0.27
COMMON SHARES
Basic Shares Outstanding	21.46M shares	21.45M shares	21.27M shares
Diluted Shares Outstanding			21.35M shares

Balance Sheet

Concept	2016 Q4	2016 Q3	2015 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$25.70M	$33.00M	$46.30M
YoY Change	-44.49%	-33.2%	-0.86%
Cash & Equivalents	$25.70M	$32.96M	$46.31M
Short-Term Investments
Other Short-Term Assets	$7.400M	$3.500M	$6.500M
YoY Change	13.85%	16.67%	1.56%
Inventory	$33.40M	$13.24M	$13.40M
Prepaid Expenses
Receivables	$143.0M	$124.4M	$112.3M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$209.5M	$209.7M	$178.5M
YoY Change	17.37%	10.94%	7.99%
LONG-TERM ASSETS
Property, Plant & Equipment	$16.70M	$15.69M	$12.70M
YoY Change	31.5%	34.33%	22.12%
Goodwill		$39.94M
YoY Change		131.53%
Intangibles		$31.72M
YoY Change		571.67%
Long-Term Investments
YoY Change
Other Assets	$95.40M	$3.710M	$4.500M
YoY Change	2020.0%	24.33%	0.0%
Total Long-Term Assets	$182.5M	$184.6M	$44.58M
YoY Change	309.38%	403.87%	34.11%
TOTAL ASSETS
Total Short-Term Assets	$209.5M	$209.7M	$178.5M
Total Long-Term Assets	$182.5M	$184.6M	$44.58M
Total Assets	$392.0M	$394.3M	$223.1M
YoY Change	75.72%	74.73%	12.36%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$100.8M	$108.8M	$74.50M
YoY Change	35.3%	31.24%	5.97%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due		$0.00	$0.00
YoY Change		-100.0%
Total Short-Term Liabilities	$125.8M	$133.1M	$98.55M
YoY Change	27.65%	23.11%	9.5%
LONG-TERM LIABILITIES
Long-Term Debt	$29.30M	$29.26M	$10.24M
YoY Change	186.1%	217.91%	0.4%
Other Long-Term Liabilities	$6.800M	$6.832M	$6.930M
YoY Change	-1.88%	-2.16%	-1.0%
Total Long-Term Liabilities	$36.10M	$36.09M	$17.17M
YoY Change	110.24%	122.96%	-0.17%
TOTAL LIABILITIES
Total Short-Term Liabilities	$125.8M	$133.1M	$98.55M
Total Long-Term Liabilities	$36.10M	$36.09M	$17.17M
Total Liabilities	$163.8M	$169.1M	$115.7M
YoY Change	41.55%	36.11%	7.85%
SHAREHOLDERS EQUITY
Retained Earnings	$36.92M	$32.75M	-$82.23M
YoY Change	-144.9%	-137.2%
Common Stock		$220.0K	$220.0K
YoY Change		0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$4.781M	$4.523M
YoY Change		8.63%
Treasury Stock Shares	580.0K shares	593.0K shares	588.3K shares
Shareholders Equity	$228.2M	$223.4M	$107.4M
YoY Change
Total Liabilities & Shareholders Equity	$392.0M	$394.3M	$223.1M
YoY Change	75.72%	74.73%	12.38%

Cashflow Statement

Concept	2016 Q4	2016 Q3	2015 Q4
OPERATING ACTIVITIES
Net Income	$3.872M	$102.0M	$5.799M
YoY Change	-33.23%	1263.55%	76.15%
Depreciation, Depletion And Amortization	$2.059M	$2.160M	$816.0K
YoY Change	152.33%	208.57%	40.93%
Cash From Operating Activities	-$5.635M	$11.07M	$4.908M
YoY Change	-214.81%	108.87%	3508.82%
INVESTING ACTIVITIES
Capital Expenditures	$1.796M	-$1.260M	$352.0K
YoY Change	410.23%	223.08%	-49.64%
Acquisitions			$7.538M
YoY Change
Other Investing Activities	$10.00K	$180.0K	-$7.540M
YoY Change	-100.13%
Cash From Investing Activities	-$1.788M	-$1.090M	-$7.890M
YoY Change	-77.34%	179.49%	1028.76%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$14.00K		$72.00K
YoY Change	-80.56%		-29.41%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$37.00K	430.0K	-$65.00K
YoY Change	-156.92%	-219.44%	-36.27%
NET CHANGE
Cash From Operating Activities	-$5.635M	11.07M	$4.908M
Cash From Investing Activities	-$1.788M	-1.090M	-$7.890M
Cash From Financing Activities	$37.00K	430.0K	-$65.00K
Net Change In Cash	-$7.386M	10.41M	-$3.047M
YoY Change	142.4%	128.79%	358.2%
FREE CASH FLOW
Cash From Operating Activities	-$5.635M	$11.07M	$4.908M
Capital Expenditures	$1.796M	-$1.260M	$352.0K
Free Cash Flow	-$7.431M	$12.33M	$4.556M
YoY Change	-263.1%	116.7%	-909.24%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2015Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2015Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
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CY2015Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
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CY2014Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.16
CY2014Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2014Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
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CY2015Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2015Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.08
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CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	115080	shares
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CY2014Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	170000	shares
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CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
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CY2014Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.46
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CY2016Q3	iesc	Estimatedundiscountedultimatelossesinyeartwo Estimatedundiscountedultimatelossesinyeartwo	1183000	USD
CY2016Q3	iesc	Estimatedundiscountedultimatelossesinyearthree Estimatedundiscountedultimatelossesinyearthree	625000	USD
CY2016Q3	iesc	Estimatedundiscountedultimatelossesinyearfour Estimatedundiscountedultimatelossesinyearfour	403000	USD
CY2016Q3	iesc	Estimatedundiscountedultimatelossesinyearfive Estimatedundiscountedultimatelossesinyearfive	216000	USD
CY2016Q3	iesc	Estimatedundiscountedultimatelossesthereafter Estimatedundiscountedultimatelossesthereafter	969000	USD
CY2015Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	34866000	USD
CY2015Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	29000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	40821000	USD
CY2016Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	180000	USD
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CY2016	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	120778000	USD
CY2016	iesc	Discontinuednetincomelossavailabletocommonstockholdersbasic Discontinuednetincomelossavailabletocommonstockholdersbasic	0	USD
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	119722000	USD
CY2015	iesc	Continuingnetincomelossavailabletocommonstockholdersbasic Continuingnetincomelossavailabletocommonstockholdersbasic	16792000	USD
CY2015	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	16877000	USD
CY2015	iesc	Discontinuednetincomelossavailabletocommonstockholdersbasic Discontinuednetincomelossavailabletocommonstockholdersbasic	-339000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5302000	USD
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-339000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	16453000	USD
CY2015	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	416000	USD
CY2015	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	354000	USD
CY2016Q3	us-gaap	Accounts Payable Trade Current And Noncurrent AccountsPayableTradeCurrentAndNoncurrent	64963000	USD
CY2016Q3	us-gaap	Accrued Employee Benefits Current And Noncurrent AccruedEmployeeBenefitsCurrentAndNoncurrent	26827000	USD
CY2016Q3	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	11568000	USD
CY2015Q3	us-gaap	Accounts Payable Trade Current And Noncurrent AccountsPayableTradeCurrentAndNoncurrent	47033000	USD
CY2015Q3	us-gaap	Accrued Employee Benefits Current And Noncurrent AccruedEmployeeBenefitsCurrentAndNoncurrent	22527000	USD
CY2015Q3	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	8832000	USD
CY2016Q3	iesc	Billings To Date BillingsToDate	-466368000	USD
CY2016Q3	iesc	Contracts In Process Net ContractsInProcessNet	-8675000	USD
CY2015Q3	iesc	Billings To Date BillingsToDate	-380365000	USD
CY2016Q3	iesc	Contracts In Process Net From Balance Sheet ContractsInProcessNetFromBalanceSheet	-8675000	USD
CY2015Q3	iesc	Contracts In Process Net From Balance Sheet ContractsInProcessNetFromBalanceSheet	-12847000	USD
CY2015Q3	iesc	Contracts In Process Net ContractsInProcessNet	-12847000	USD
CY2016Q3	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	599000	USD
CY2016Q3	us-gaap	Investments Investments	919000	USD
CY2016Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2192000	USD
CY2015Q3	iesc	Deferredtaxassetsnoncurrent1 Deferredtaxassetsnoncurrent1	147000	USD
CY2015Q3	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	617000	USD
CY2015Q3	us-gaap	Investments Investments	919000	USD
CY2015Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	1301000	USD
CY2016Q3	us-gaap	Cost Method Investments CostMethodInvestments	919000	USD
CY2016Q3	us-gaap	Cost Method Investments Fair Value Disclosure CostMethodInvestmentsFairValueDisclosure	1078000	USD
CY2015Q3	us-gaap	Cost Method Investments Fair Value Disclosure CostMethodInvestmentsFairValueDisclosure	985000	USD
CY2016	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	159000	USD
CY2015	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	66000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	762000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-97093000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	417000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-564000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	183000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	182000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	952000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1738000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	729000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	79000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	554000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-171000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	8316000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	322000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	9186000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	99610000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1169000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	200000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	573000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	222000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	413000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1744000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	113439000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2228000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	202000	USD
CY2015Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	55963000	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	55867000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2016	us-gaap	Depreciation Depreciation	5664000	USD
CY2016	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3417000	USD
CY2015	us-gaap	Depreciation Depreciation	2509000	USD
CY2015	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2779000	USD
CY2014	us-gaap	Depreciation Depreciation	2526000	USD
CY2014	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1982000	USD
CY2014Q3	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	14993000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	5050000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	3154000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2903000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2818000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	2714000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	15084000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	31723000	USD
CY2016Q3	us-gaap	Gross Profit GrossProfit	37538000	USD
CY2015Q4	us-gaap	Revenues Revenues	150766000	USD
CY2016Q3	us-gaap	Revenues Revenues	205647000	USD
CY2015Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	3962000	USD
CY2015Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-5000	USD
CY2015Q2	us-gaap	Profit Loss ProfitLoss	3957000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	7588000	USD
CY2015Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-109000	USD
CY2015Q3	us-gaap	Profit Loss ProfitLoss	7479000	USD
CY2016Q2	us-gaap	Revenues Revenues	179599000	USD
CY2016Q1	us-gaap	Gross Profit GrossProfit	27812000	USD
CY2016Q2	us-gaap	Gross Profit GrossProfit	33997000	USD
CY2015Q1	us-gaap	Revenues Revenues	133752000	USD
CY2015Q3	us-gaap	Revenues Revenues	159687000	USD
CY2015Q1	us-gaap	Gross Profit GrossProfit	21708000	USD
CY2015Q2	us-gaap	Gross Profit GrossProfit	25052000	USD
CY2015Q3	us-gaap	Gross Profit GrossProfit	30427000	USD
CY2014Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	3473000	USD
CY2014Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-181000	USD
CY2014Q4	us-gaap	Profit Loss ProfitLoss	3292000	USD
CY2015Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1854000	USD
CY2015Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-44000	USD
CY2016Q3	us-gaap	Defined Benefit Plan Plans With Benefit Obligations In Excess Of Plan Assets Aggregate Benefit Obligation DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateBenefitObligation	875000	USD
CY2015Q3	us-gaap	Defined Benefit Plan Plans With Benefit Obligations In Excess Of Plan Assets Aggregate Benefit Obligation DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateBenefitObligation	871000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	5868000	USD
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	5295000	USD
CY2014	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	5300000	USD
CY2016	iesc	Reorganization Of Goodwill Excess Tax Basis ReorganizationOfGoodwillExcessTaxBasis	24190000	USD
CY2015Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	18000	USD
CY2016Q3	us-gaap	Increase In Unrecognized Tax Benefits Is Reasonably Possible IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	3745000	USD
CY2016Q1	dei	Entity Public Float EntityPublicFloat	113458469	USD
CY2014Q3	us-gaap	Assets Assets	199950000	USD
CY2015Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2015Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2015Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2015Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2015Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2015Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2015Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22049529	shares
CY2015Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	21475741	shares
CY2015Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	573788	shares
CY2016Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2016Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2016Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2016Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2016Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2016Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22049529	shares
CY2016Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	21456539	shares
CY2016Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	592990	shares
CY2016	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.63
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.63
CY2016	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	5.62
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2014	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.3
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2014	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.3
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18417564	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	18473420	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	21279342	shares
CY2014	us-gaap	Revenues Revenues	512395000	USD
CY2014	us-gaap	Cost Of Services CostOfServices	429269000	USD
CY2014	us-gaap	Gross Profit GrossProfit	83126000	USD
CY2014	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	86000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	7641000	USD
CY2014	us-gaap	Interest Expense InterestExpense	1574000	USD
CY2014	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	203000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	6270000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	748000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	5522000	USD
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-198000	USD
CY2014	us-gaap	Profit Loss ProfitLoss	5324000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-19000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5305000	USD
CY2016	us-gaap	Revenues Revenues	695993000	USD
CY2016	us-gaap	Cost Of Services CostOfServices	569013000	USD
CY2016	us-gaap	Gross Profit GrossProfit	126980000	USD
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	100558000	USD
CY2016	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-810000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	24960000	USD
CY2016	us-gaap	Interest Expense InterestExpense	1282000	USD
CY2016	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	83000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	23761000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-97117000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	120878000	USD
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2016	us-gaap	Profit Loss ProfitLoss	120878000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	120778000	USD
CY2015	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	3622000	USD
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	524000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	19676000	USD
CY2016	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-16000	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	220000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2013Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	20757000	USD
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	19650000	USD
CY2014	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	170000	USD
CY2014	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2295000	USD
CY2014	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-233000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1982000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	12598000	USD
CY2014	us-gaap	Repayments Of Debt RepaymentsOfDebt	3502000	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	179000	USD
CY2014	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	0	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	15969000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	26585000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1982000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3622000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	590000	USD
CY2016Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	25307000	USD
CY2015Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	23212000	USD
CY2016	us-gaap	Use Of Estimates UseOfEstimates	<div><p style='text-align:left;margin-top:0pt;margin-bottom:0pt;line-height:12pt;' ><font style='font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0pt;color:#000000;' >Use of Estimates</font></p><p style='text-align:left;line-height:12pt;' ></p><p style='text-align:justify;margin-top:0pt;margin-bottom:0pt;line-height:12pt;' ><font style='font-family:Times New Roman;font-size:10pt;margin-left:0pt;color:#000000;' >The preparation of financial statements in conformity with accountin</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >g principles generally accepted</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > in the United States of America</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >(“GAAP”)</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > requires the use of estimates and assumptions by management in determining the reported amounts of assets and liabilities, disclosures of contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses duri</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >ng the reporting period. Actual results could differ from those estimates. Estimates are primarily used in our revenue recognition of construction in progress, fair value assumptions in</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > accounting for business combinations and</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > analyzing goodwill, investments, intangible assets and long-lived asse</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >t impairments and adjustments, allowance for doubtful accounts receivable, stock-based compensation, reserves for legal matters, </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >realizability</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > of deferred tax assets, </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >unrecognized tax benefits </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >and self-insured claims liabilities and related reserves.</font></p><p style='text-align:justify;line-height:12pt;' ></p></div>
CY2016	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div><p style='text-align:justify;margin-top:0pt;margin-bottom:0pt;line-height:12pt;' ><font style='font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0pt;color:#000000;' >Risk Concentration</font></p><p style='text-align:justify;line-height:12pt;' ></p><p style='text-align:justify;margin-top:0pt;margin-bottom:0pt;line-height:12pt;' ><font style='font-family:Times New Roman;font-size:10pt;margin-left:0pt;color:#000000;' >Financial instruments, which potentially subject us to concentrations of credit risk, consist principally of cash deposits and accounts receivable. </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >Through delayed payment terms, we at times </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >grant credit, usually without collateral, to our customers, who are generally </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >large public companies, </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >contractors and homebuilders throughout the United States. Consequently, we are subject to potential credit risk related to changes in business and economic factors throughout the </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >United States</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >, specifically,</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > within the construction</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >,</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > homebuilding </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >and mission critical facility </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >market</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >s</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >. However, we are entitled to payment for work performed and </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >generally </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >have certain lien rights in that work. Further, management believes that its contract acceptance, billing and collection policies are</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > adequate to manage potential credit risk. We routinely maintain cash balances in financial institutions in excess of federally insured limits</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >. We periodically assess the financial condition of these institutions where these funds are held and believe the</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > credit risk is minimal</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >. </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >W</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >e maintain the majority of our cash and cash equivalents in money market mutual funds.</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > There can be no assurance, however, that we will not be adversely affected by credit risks we face. </font></p><p style='text-align:justify;margin-top:0pt;margin-bottom:0pt;line-height:12pt;' ><font style='font-family:Times New Roman;font-size:10pt;margin-left:0pt;color:#000000;' > </font></p><p style='text-align:justify;margin-top:0pt;margin-bottom:0pt;line-height:12pt;' ><font style='font-family:Times New Roman;font-size:10pt;margin-left:0pt;color:#000000;' >No single customer accounted for more t</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >han </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >10%</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > of our </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >consolidated </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >revenues for the years ended </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >September 30, 2016</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >, </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >2015</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' > and </font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >2014</font><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >.</font></p><p style='text-align:left;line-height:12pt;' ></p></div>
CY2016	us-gaap	Debt Issuance Costs DebtIssuanceCosts	345000	USD
CY2015	us-gaap	Debt Issuance Costs DebtIssuanceCosts	317000	USD
CY2014	us-gaap	Debt Issuance Costs DebtIssuanceCosts	385000	USD
CY2016	iesc	Number Of Single Customers Comprising More Than Ten Percent Of Consolidated Net Sales NumberOfSingleCustomersComprisingMoreThanTenPercentOfConsolidatedNetSales	0	pure
CY2016Q3	us-gaap	Loss Contingency Accrual Insurance Related Assessment Discount Rate LossContingencyAccrualInsuranceRelatedAssessmentDiscountRate	0.011	pure
CY2015Q3	us-gaap	Loss Contingency Accrual Insurance Related Assessment Discount Rate LossContingencyAccrualInsuranceRelatedAssessmentDiscountRate	0.014	pure
CY2014	iesc	Continuingnetincomelossavailabletocommonstockholdersdiluted Continuingnetincomelossavailabletocommonstockholdersdiluted	22000	USD
CY2015	iesc	Continuingnetincomelossavailabletocommonstockholdersdiluted Continuingnetincomelossavailabletocommonstockholdersdiluted	85000	USD
CY2016	iesc	Continuingnetincomelossavailabletocommonstockholdersdiluted Continuingnetincomelossavailabletocommonstockholdersdiluted	1056000	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	212997	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	45566	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	55856	shares
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1056000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	85000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	22000	USD
CY2015Q3	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	0	USD
CY2016Q3	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	0	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2936000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	381000	USD
CY2016Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	2538000	USD
CY2016Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	4158000	USD
CY2016Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1558000	USD
CY2016Q3	us-gaap	Other Inventory OtherInventory	4982000	USD
CY2015Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	1641000	USD
CY2015Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	2641000	USD
CY2015Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1199000	USD
CY2015Q3	us-gaap	Other Inventory OtherInventory	8496000	USD
CY2016	iesc	Costs Incurred Contract In Progress CostsIncurredContractInProgress	409075000	USD
CY2016	iesc	Estimated Profit On Contract In Progress EstimatedProfitOnContractInProgress	457693000	USD
CY2015	iesc	Costs Incurred Contract In Progress CostsIncurredContractInProgress	329942000	USD
CY2015	iesc	Estimated Profit On Contract In Progress EstimatedProfitOnContractInProgress	367518000	USD
CY2015Q3	us-gaap	Cost Method Investments CostMethodInvestments	919000	USD
CY2014Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	780000	USD
CY2016Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	6944000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	280000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	10729000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	86280000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1410000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	84000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1012000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	338000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	0	USD
CY2016Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3185000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	103318000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	101094000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	93549000	USD
CY2016Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1517000	USD
CY2016Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	5629000	USD
CY2016Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	399000	USD
CY2016Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	7545000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2224000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	111211000	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	599000	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	1084000	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	343000	USD
CY2015Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	2026000	USD
CY2014Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	56079000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	98000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	198000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	17000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	27000	USD
CY2016Q3	iesc	Deferredtaxassetsnoncurrent1 Deferredtaxassetsnoncurrent1	0	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	6139000	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2195000	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	11000	USD
CY2016	dei	Document Period End Date DocumentPeriodEndDate	2016-09-30
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.87
CY2016	iesc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Options Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskOptionsTerm	P10Y
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2016	iesc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Forfeiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskForfeitureRate	0.1	pure
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	5.76
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	7.25
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.79
CY2016Q3	iesc	Uncertain Tax Benefit Net Opertating Loss From Goodwill UncertainTaxBenefitNetOpertatingLossFromGoodwill	50581000	USD
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	0	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	194000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	13500	shares
CY2016	dei	Trading Symbol TradingSymbol	IESC
CY2015	us-gaap	Cost Of Services CostOfServices	473966000	USD
CY2015	us-gaap	Revenues Revenues	573857000	USD
CY2015	us-gaap	Gross Profit GrossProfit	99891000	USD
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	81416000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	13000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	18488000	USD
CY2015	us-gaap	Interest Expense InterestExpense	1130000	USD
CY2015	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	180000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	17538000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	661000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	16877000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	16538000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	2000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	16540000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.79
CY2015	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.79
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.77
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.77
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.02
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	21526188	shares
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	711000	USD
CY2016	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div><table style='border-collapse:collapse;' ><tr style='height:12.75pt;' ><td colspan='2' rowspan='1' style='width:119.25pt;text-align:left;border-color:Black;min-width:119.25pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >Year Ended September 30:</font></td><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:9.75pt;text-align:left;border-color:Black;min-width:9.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;font-weight:bold;color:#000000;' ></font></td><td style='width:52.5pt;text-align:left;border-color:Black;min-width:52.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;font-weight:bold;color:#000000;' ></font></td></tr><tr style='height:12.75pt;' ><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:114.75pt;text-align:left;border-color:Black;min-width:114.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >2017</font></td><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:9.75pt;text-align:left;border-color:Black;min-width:9.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >$</font></td><td style='width:52.5pt;text-align:right;border-color:Black;min-width:52.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >1,827</font></td></tr><tr style='height:13.5pt;' ><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:114.75pt;text-align:left;border-color:Black;min-width:114.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >2018</font></td><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:9.75pt;text-align:left;border-color:Black;min-width:9.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:52.5pt;text-align:right;border-color:Black;min-width:52.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >1,183</font></td></tr><tr style='height:13.5pt;' ><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:114.75pt;text-align:left;border-color:Black;min-width:114.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >2019</font></td><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:9.75pt;text-align:left;border-color:Black;min-width:9.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:52.5pt;text-align:right;border-color:Black;min-width:52.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >625</font></td></tr><tr style='height:12.75pt;' ><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:114.75pt;text-align:left;border-color:Black;min-width:114.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >2020</font></td><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:9.75pt;text-align:left;border-color:Black;min-width:9.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:52.5pt;text-align:right;border-color:Black;min-width:52.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >403</font></td></tr><tr style='height:12.75pt;' ><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:114.75pt;text-align:left;border-color:Black;min-width:114.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >2021</font></td><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:1pt;color:#000000;' ></font></td><td style='width:9.75pt;text-align:right;border-color:Black;min-width:9.75pt;' ><font style='font-family:Times New Roman;font-size:1pt;color:#000000;' ></font></td><td style='width:52.5pt;text-align:right;border-color:Black;min-width:52.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >216</font></td></tr><tr style='height:12.75pt;' ><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:114.75pt;text-align:left;border-color:Black;min-width:114.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >Thereafter</font></td><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:9.75pt;border-bottom-style:solid;border-bottom-width:1;text-align:left;border-color:Black;min-width:9.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:52.5pt;border-bottom-style:solid;border-bottom-width:1;text-align:right;border-color:Black;min-width:52.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >969</font></td></tr><tr style='height:13.5pt;' ><td colspan='2' rowspan='1' style='width:119.25pt;text-align:left;border-color:Black;min-width:119.25pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >Total</font></td><td style='width:4.5pt;text-align:left;border-color:Black;min-width:4.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' ></font></td><td style='width:9.75pt;border-top-style:solid;border-top-width:1;border-bottom-style:double;border-bottom-width:3;text-align:left;border-color:Black;min-width:9.75pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >$</font></td><td style='width:52.5pt;border-top-style:solid;border-top-width:1;border-bottom-style:double;border-bottom-width:3;text-align:right;border-color:Black;min-width:52.5pt;' ><font style='font-family:Times New Roman;font-size:10pt;color:#000000;' >5,223</font></td></tr></table></div>
CY2016	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<div><p style='text-align:justify;margin-top:0pt;margin-bottom:0pt;line-height:12pt;' ><font style='font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:0pt;color:#000000;' >Asset Impairment</font></p><p style='text-align:justify;line-height:12pt;' ></p><p style='text-align:justify;margin-top:0pt;margin-bottom:0pt;line-height:12pt;' ><font style='font-family:Times New Roman;font-size:10pt;margin-left:0pt;' >During the fiscal years ended </font><font style='font-family:Times New Roman;font-size:10pt;' >September 30, 2016</font><font style='font-family:Times New Roman;font-size:10pt;' >, </font><font style='font-family:Times New Roman;font-size:10pt;' >2015</font><font style='font-family:Times New Roman;font-size:10pt;' > and </font><font style='font-family:Times New Roman;font-size:10pt;' >2014</font><font style='font-family:Times New Roman;font-size:10pt;' >, the Company recorded no asset impairment charges.</font></p><p style='text-align:justify;line-height:12pt;' ></p></div>
CY2015	us-gaap	Loss Contingency Undiscounted Amount Of Insurance Related Assessment Liability LossContingencyUndiscountedAmountOfInsuranceRelatedAssessmentLiability	4465000	USD
CY2016	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	360000	USD
CY2016	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	466000	USD
CY2016Q3	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	29257000	USD
CY2015Q3	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	9207000	USD
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	635000	USD
CY2016	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	23264000	USD
CY2015Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	5940000	USD
CY2015Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1217000	USD
CY2016Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	35871000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	4148000	USD
CY2016Q3	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	5.76
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.5781	pure
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.556	pure
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum	0.0134	pure
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum	0.0148	pure
CY2016	dei	Entity Central Index Key EntityCentralIndexKey	0001048268
CY2016	dei	Document Type DocumentType	10-K
CY2016	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2016	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2016	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2016	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2016	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2016Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	32961000	USD
CY2016Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	260000	USD
CY2016Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	124368000	USD
CY2016Q3	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	20135000	USD
CY2016Q3	us-gaap	Inventory Net InventoryNet	13236000	USD
CY2016Q3	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs CostsInExcessOfBillingsOnUncompletedContractsOrPrograms	15554000	USD
CY2016Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	3214000	USD
CY2016Q3	us-gaap	Assets Current AssetsCurrent	209728000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	15694000	USD
CY2016Q3	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	39936000	USD
CY2016Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	31723000	USD
CY2016Q3	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	93549000	USD
CY2016Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3710000	USD
CY2016Q3	us-gaap	Assets Assets	394340000	USD
CY2016Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	108822000	USD
CY2016Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2016Q3	us-gaap	Billings In Excess Of Cost BillingsInExcessOfCost	24229000	USD
CY2016Q3	us-gaap	Liabilities Current LiabilitiesCurrent	133051000	USD
CY2016Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	29257000	USD
CY2016Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6832000	USD
CY2016Q3	us-gaap	Liabilities Liabilities	169140000	USD
CY2016Q3	us-gaap	Members Equity Attributable To Noncontrolling Interest MembersEquityAttributableToNoncontrollingInterest	1795000	USD
CY2016Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2015Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	193628000	USD
CY2015Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-88033000	USD
CY2015Q3	us-gaap	Stockholders Equity StockholdersEquity	101414000	USD
CY2015Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	225679000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	100000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2014	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2015Q3	us-gaap	Billings In Excess Of Cost BillingsInExcessOfCost	25165000	USD
CY2015Q3	us-gaap	Liabilities Current LiabilitiesCurrent	108079000	USD
CY2015Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	9203000	USD
CY2015Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6983000	USD
CY2015Q3	us-gaap	Liabilities Liabilities	124265000	USD
CY2015Q3	us-gaap	Members Equity Attributable To Noncontrolling Interest MembersEquityAttributableToNoncontrollingInterest	0	USD
CY2015Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2015Q3	us-gaap	Common Stock Value CommonStockValue	220000	USD
CY2015Q3	us-gaap	Treasury Stock Value TreasuryStockValue	4401000	USD
CY2016Q3	us-gaap	Common Stock Value CommonStockValue	220000	USD
CY2016Q3	us-gaap	Treasury Stock Value TreasuryStockValue	4781000	USD
CY2016Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	195221000	USD
CY2016Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	32745000	USD
CY2016Q3	us-gaap	Stockholders Equity StockholdersEquity	223405000	USD
CY2016Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	394340000	USD
CY2015Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	0	USD
CY2015Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	92976000	USD
CY2015Q3	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	17453000	USD
CY2015Q3	us-gaap	Inventory Net InventoryNet	13977000	USD
CY2015Q3	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs CostsInExcessOfBillingsOnUncompletedContractsOrPrograms	12318000	USD
CY2015Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	2956000	USD
CY2015Q3	us-gaap	Assets Current AssetsCurrent	189040000	USD
CY2015Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11683000	USD
CY2015Q3	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	17249000	USD
CY2015Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4723000	USD
CY2015Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2984000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	0	USD
CY2015Q3	us-gaap	Assets Assets	225679000	USD
CY2015Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	82910000	USD
CY2015Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	4000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-98402000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2014	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	179000	USD
CY2014	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	19649000	USD
CY2016Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	223405000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2016	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	652000	USD
CY2014	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	0	USD
CY2015	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	0	USD
CY2016Q3	iesc	Estimatedcostofcompetionofbondedproject Estimatedcostofcompetionofbondedproject	54287000	USD
CY2016Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	599000	USD
CY2016Q3	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	-987000	USD
CY2015Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	617000	USD
CY2015Q3	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	113000	USD
CY2016	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	577000	USD
CY2016Q3	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	5464000	USD
CY2015Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	842000	USD
CY2016Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	736000	USD
CY2015Q3	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	4518000	USD
CY2016Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	235000	USD
CY2015Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	464000	USD
CY2016	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	65000	USD
CY2015	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	11000	USD
CY2014	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	15000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	5324000	USD
CY2016	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	20000000	USD
CY2016	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.025	pure
CY2016	us-gaap	Loss Contingency Undiscounted Amount Of Insurance Related Assessment Liability LossContingencyUndiscountedAmountOfInsuranceRelatedAssessmentLiability	5223000	USD
CY2016	iesc	Residual Shares Related To Acquisition Returned To Treasury Stock ResidualSharesRelatedToAcquisitionReturnedToTreasuryStock	6859	shares
CY2016	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	42500	shares
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	6.43
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	69000	USD
CY2015Q3	iesc	Uncertain Tax Benefit Net Opertating Loss From Goodwill UncertainTaxBenefitNetOpertatingLossFromGoodwill	50581000	USD
CY2015Q3	us-gaap	Goodwill Goodwill	17249000	USD
CY2016Q3	us-gaap	Goodwill Goodwill	39936000	USD
CY2016	iesc	Estimated Earnings On Contracts In Progress EstimatedEarningsOnContractsInProgress	48618000	USD
CY2015	iesc	Estimated Earnings On Contracts In Progress EstimatedEarningsOnContractsInProgress	37576000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	120778000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	16538000	USD
CY2014Q3	us-gaap	Goodwill Goodwill	14993000	USD
CY2015	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2256000	USD
CY2016Q3	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	976000	USD
CY2015Q3	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	1031000	USD
CY2015Q3	us-gaap	Debt Current DebtCurrent	4000	USD
CY2015Q3	us-gaap	Long Term Debt LongTermDebt	10234000	USD
CY2016Q3	us-gaap	Debt Current DebtCurrent	0	USD
CY2016Q3	us-gaap	Long Term Debt LongTermDebt	30233000	USD
CY2016Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	74000	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	11000	shares
CY2015Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	504000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	7500	shares
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	10805000	USD
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	5799000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	2194000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	101980000	USD
CY2016	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	590000	USD
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	220000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1583000	USD

Files In Submission

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$IESC
IES Holdings, Inc. Stock $iesc

2016 Q4 Form 10-K Financial Statement

#000119312516789187 Filed on December 09, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IESC IES Holdings, Inc. Stock $iesc

2016 Q4 Form 10-K Financial Statement

#000119312516789187 Filed on December 09, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IESC
IES Holdings, Inc. Stock $iesc