v3.22.4
DEI Document - shares
 3 Months Ended
Dec. 31, 2022
Jan. 31, 2023
Entity Information [Line Items]    
Entity File Number 001-13783  
Entity Registrant Name IES Holdings, Inc.  
Document Period End Date Dec. 31, 2022  
Document Quarterly Report true  
Document Transition Report false  
Entity Central Index Key 0001048268  
Entity Incorporation, State or Country Code DE  
Document Type 10-Q  
Amendment Flag false  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --09-30  
Entity Filer Category Accelerated Filer  
Entity Tax Identification Number 76-0542208  
Title of 12(b) Security Common Stock, par value $0.01 per share  
Trading Symbol IESC  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Address, Address Line One 5433 Westheimer Road  
Entity Address, Address Line Two Suite 500  
Entity Address, City or Town Houston  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77056  
City Area Code 713  
Local Phone Number 860-1500  
Entity Common Stock, Shares Outstanding   20,169,805