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Subsequent Event (Details) - Subsequent Event [Member] | Nov. 20, 2015 | Oct. 30, 2015 | Oct. 02, 2015
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Phantom Share Units PSU's Employees [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Subsequent Event Description |  |  | the Company awarded certain officers, including each of its named executive officers, and key employees performance-based phantom stock units pursuant to the terms and conditions of the Integrated Electrical Services, Inc. Amended and Restated 2006 Equity Incentive Plan.
Business Acquisition Calumet [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Subsequent Event Description |  | a subsidiary of our Infrastructure Solutions segment acquired all of the membership interests of Calumet Armature & Electric, LLC (“Calumet”) |
Name of Acquired Business |  | Calumet Armature & Electric, LLC (“Calumet”) |
Description of Acquired Business |  | an Illinois-based provider of design, manufacturing, assembly, and repair services of electric motors for the industrial and mass transit markets. |
Business Acquisition Shanahan [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Subsequent Event Description | a subsidiary of our Commercial & Industrial segment acquired all of the outstanding shares of stock of Shanahan Mechanical and Electrical, Inc. (“Shanahan”) |  |
Name of Acquired Business | Shanahan Mechanical and Electrical, Inc. (“Shanahan”) |  |
Description of Acquired Business | a Nebraska-based provider of mechanical and electrical contracting services. |  |

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- Definition With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Name of the acquired entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Describes the event or transaction that occurred between the balance sheet date and the date the financial statements are issued or available to be issued. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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