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Document And Entity Information
 9 Months Ended
Jun. 30, 2012
Aug. 13, 2012
Document And Entity Information [Abstract]    
Entity Registrant Name INTEGRATED ELECTRICAL SERVICES INC  
Entity Central Index Key 0001048268  
Document Type 10-Q  
Document Period End Date Jun. 30, 2012  
Amendment Flag false  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --09-30  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   14,994,653
Entity Well-known Seasoned Issuer No  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No