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Revenue Recognition (Tables) | 12 Months Ended
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Sep. 30, 2023
Revenue Recognition and Deferred Revenue [Abstract] |
Disaggregation of Revenue [Table Text Block] |
| Year Ended September 30,
| 2023 |  | 2022 |  | 2021
Communications | $ | 600,776 |  |  | $ | 559,777 |  |  | $ | 445,968 |
Residential |  |  |  |  |
Single-family | 961,271 |  |  | 825,505 |  |  | 454,449 |
Multi-family and Other | 318,233 |  |  | 305,909 |  |  | 232,898 |
Total Residential | 1,279,504 |  |  | 1,131,414 |  |  | 687,347 |
Infrastructure Solutions |  |  |  |  |
Industrial Services | 46,091 |  |  | 65,686 |  |  | 44,427 |
Custom Power Solutions | 171,262 |  |  | 101,427 |  |  | 102,553 |
Total Infrastructure Solutions | 217,353 |  |  | 167,113 |  |  | 146,980 |
Commercial & Industrial | 279,594 |  |  | 308,504 |  |  | 256,198 |
Total Revenue | $ | 2,377,227 |  |  | $ | 2,166,808 |  |  | $ | 1,536,493 |
|  | Year Ended September 30, 2023
|  |  | Communications |  | Residential |  | Infrastructure Solutions |  | Commercial & Industrial |  | Total
Fixed-price |  | $ | 404,684 |  |  | $ | 1,279,504 |  |  | $ | 210,547 |  |  | $ | 241,159 |  |  | $ | 2,135,894 |
Time-and-material |  | 196,092 |  |  | — |  |  | 6,806 |  |  | 38,435 |  |  | 241,333 |
Total revenue |  | $ | 600,776 |  |  | $ | 1,279,504 |  |  | $ | 217,353 |  |  | $ | 279,594 |  |  | $ | 2,377,227 |
|  | Year Ended September 30, 2022
|  |  | Communications |  | Residential |  | Infrastructure Solutions |  | Commercial & Industrial |  | Total
Fixed-price |  | $ | 367,513 |  |  | $ | 1,131,414 |  |  | $ | 159,994 |  |  | $ | 282,522 |  |  | $ | 1,941,443 |
Time-and-material |  | 192,264 |  |  | — |  |  | 7,119 |  |  | 25,982 |  |  | 225,365 |
Total revenue |  | $ | 559,777 |  |  | $ | 1,131,414 |  |  | $ | 167,113 |  |  | $ | 308,504 |  |  | $ | 2,166,808 |
|  | Year Ended September 30, 2021
|  |  | Communications |  | Residential |  | Infrastructure Solutions |  | Commercial & Industrial |  | Total
Fixed-price |  | $ | 327,496 |  |  | $ | 687,347 |  |  | $ | 139,532 |  |  | $ | 243,546 |  |  | $ | 1,397,921 |
Time-and-material |  | 118,472 |  |  | — |  |  | 7,448 |  |  | 12,652 |  |  | 138,572 |
Total revenue |  | $ | 445,968 |  |  | $ | 687,347 |  |  | $ | 146,980 |  |  | $ | 256,198 |  |  | $ | 1,536,493 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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- References No definition available. + Details
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