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v3.25.2

Revenue Recognition (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Sep. 30, 2024
Revenue Recognition and Deferred Revenue [Abstract] |  |  |  |  |
Unbilled Receivables, Current | $ 13,639 |  | $ 13,639 |  |
Costs and estimated earnings in excess of billings | 74,744 |  | 74,744 |  | $ 60,139
Billings in excess of costs and estimated earnings | (154,803) |  | (154,803) |  | $ (158,972)
Contract with Customer, Liability, Revenue Recognized |  |  | 145,991 | $ 96,889 |
Performance Obligation Next 12 Months | 940,247 |  | 940,247 |  |
Revenue, Remaining Performance Obligation, Amount | 1,295,207 |  | 1,295,207 |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 890,158 | $ 768,415 | 2,473,665 | 2,108,592 |
Contract with Customer, Liability, Revenue Recognized |  |  | 145,991 | 96,889 |
Commercial and Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 115,419 | 96,554 | 329,268 | 278,575 |
Communications [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 299,213 | 192,303 | 805,189 | 556,554 |
Infrastructure Solutions [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 129,488 | 102,022 | 355,233 | 240,699 |
Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 346,038 | 377,536 | 983,975 | 1,032,764 |
Fixed-price Contract [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 779,467 | 677,750 | 2,177,445 | 1,890,650 |
Fixed-price Contract [Member] | Commercial and Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 102,855 | 75,540 | 287,474 | 232,422 |
Fixed-price Contract [Member] | Communications [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 211,644 | 131,536 | 580,389 | 397,903 |
Fixed-price Contract [Member] | Infrastructure Solutions [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 118,930 | 93,138 | 325,607 | 227,561 |
Fixed-price Contract [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 346,038 | 377,536 | 983,975 | 1,032,764 |
Time-and-materials Contract [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 110,691 | 90,665 | 296,220 | 217,942 |
Time-and-materials Contract [Member] | Commercial and Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 12,564 | 21,014 | 41,794 | 46,153 |
Time-and-materials Contract [Member] | Communications [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 87,569 | 60,767 | 224,800 | 158,651 |
Time-and-materials Contract [Member] | Infrastructure Solutions [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 10,558 | 8,884 | 29,626 | 13,138 |
Time-and-materials Contract [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 0 | 0 | 0 | 0 |
industrial Services [Member] | Infrastructure Solutions [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 23,708 | 11,786 | 71,553 | 34,960 |
Custom Power Solutions [Member] | Infrastructure Solutions [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 105,780 | 90,236 | 283,680 | 205,739 |
Single Family Contracts [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 171,792 | 195,677 | 501,074 | 540,265 |
Multi Family and Other [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | 87,917 | 92,325 | 243,221 | 248,694 |
Single Family Contracts Plumbing HVAC | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | $ 86,329 | $ 89,534 | $ 239,680 | $ 243,805 |

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