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Business Combinations and Divestitures (Tables) | 12 Months Ended
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Sep. 30, 2021
Business Combinations [Abstract] |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |
Current assets | $ | 36,348 |
Property and equipment | 11,965 |
Intangible assets | 59,648 |
Goodwill | 38,632 |
Operating right of use assets | 837 |
Current liabilities | (29,149) |
Operating long-term lease liabilities | (723) |
Deferred tax liability | (3,282) |
Noncontrolling interest | (21,813) |
Net assets acquired | $ | 92,463 |
Business Acquisition, Pro Forma Information |
|  |  | Unaudited
|  |  | Twelve Months Ended September 30,
|  |  | 2021 |  | 2020
Revenues |  | $ | 1,631,057 |  | $ | 1,441,933 |
Net income attributable to IES Holdings, Inc. | $ | 69,928 |  | $ | 49,257 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
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