XML 45 R1.htm IDEA: XBRL DOCUMENT v3.19.3
DEI Document - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2019
Dec. 04, 2019
Mar. 31, 2019
Entity Information [Line Items]      
Entity Registrant Name IES Holdings, Inc.    
Document Type 10-K    
Document Period End Date Sep. 30, 2019    
Entity File Number 001-13783    
Entity Incorporation, State or Country Code DE    
Document Annual Report true    
Document Transition Report false    
Amendment Flag false    
Entity Central Index Key 0001048268    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --09-30    
Entity Tax Identification Number 76-0542208    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
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 Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Shell Company false    
Entity Public Float     $ 148.9
Entity Common Stock, Shares Outstanding   21,158,207  
Documents Incorporated by Reference
Certain information contained in the Proxy Statement for the 2020 Annual Meeting of Stockholders of the Registrant to be held on February 19, 2020, is incorporated by reference into Part III of this Annual Report on Form 10-K.

    
Common Stock [Member]      
Entity Information [Line Items]      
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol IESC    
Security Exchange Name NASDAQ    
Preferred Stock [Member]      
Entity Information [Line Items]      
Title of 12(b) Security Rights to Purchase Preferred Stock    
Trading Symbol IESC    
Security Exchange Name NASDAQ