v3.26.1
Cover
Aug. 07, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 07, 2026
Entity File Number 001-13783
Entity Registrant Name IES Holdings, Inc.
Entity Central Index Key 0001048268
Entity Tax Identification Number 76-0542208
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 13131 Dairy Ashford Road
Entity Address, Address Line Two Suite 500
Entity Address, City or Town Sugar Land
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77478
City Area Code (713)
Local Phone Number 860-1500
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol IESC
Security Exchange Name NASDAQ
Entity Emerging Growth Company false