    <SEC-DOCUMENT>0001048268-20-000034-index.html : 20201207
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    <ACCEPTANCE-DATETIME>20201207083824
    ACCESSION NUMBER:		0001048268-20-000034
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		33
    CONFORMED PERIOD OF REPORT:	20201207
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20201207
    DATE AS OF CHANGE:		20201207

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			IES Holdings, Inc.
    		CENTRAL INDEX KEY:			0001048268
    		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRICAL WORK [1731]
    		IRS NUMBER:				760542208
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0930

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13783
    		FILM NUMBER:		201371441

    	BUSINESS ADDRESS:
    		STREET 1:		5433 WESTHEIMER
    		STREET 2:		SUITE 500
    		CITY:			HOUSTON
    		STATE:			TX
    		ZIP:			77056
    		BUSINESS PHONE:		7138601500

    	MAIL ADDRESS:
    		STREET 1:		5433 WESTHEIMER
    		STREET 2:		SUITE 500
    		CITY:			HOUSTON
    		STATE:			TX
    		ZIP:			77056

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Integrated Electrical Services, Inc.
    		DATE OF NAME CHANGE:	20150106

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	INTEGRATED ELECTRICAL SERVICES INC
    		DATE OF NAME CHANGE:	19971022
    </SEC-HEADER>
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    <SEQUENCE>1
    <FILENAME>iesc-20201207.htm
    <DESCRIPTION>8-K
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    Document 1 - file: iesc-20201207.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>q42020pressrelease.htm
    <DESCRIPTION>EX-99.1
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    Document 2 - file: q42020pressrelease.htm

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    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>iesholdingsq42020earning.htm
    <DESCRIPTION>EX-99.2
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    <TEXT>
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    <SEQUENCE>6
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