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v3.24.3

Revenue Recognition (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 2,884,358 | $ 2,377,227 | $ 2,166,808
Contract with Customer, Liability, Revenue Recognized | 98,564 | 82,520 |
Capitalized Contract Cost, Impairment Loss | 0 | 0 | 0
Unbilled Receivables, Current | 13,660 |  |
Contract with Customer, Liability, Revenue Recognized | 98,564 | 82,520 |
Performance Obligation Next 12 Months | 1,011,974 |  |
Revenue, Remaining Performance Obligation, Amount | 1,175,695 |  |
Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 776,474 | 600,776 | 559,777
Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,388,840 | 1,279,504 | 1,131,414
Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 351,096 | 217,353 | 167,113
Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 367,948 | 279,594 | 308,504
Fixed-price Contract [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 2,596,151 | 2,135,894 | 1,941,443
Fixed-price Contract [Member] | Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 554,160 | 404,684 | 367,513
Fixed-price Contract [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,388,840 | 1,279,504 | 1,131,414
Fixed-price Contract [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 336,786 | 210,547 | 159,994
Fixed-price Contract [Member] | Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 316,365 | 241,159 | 282,522
Time-and-materials Contract [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 288,207 | 241,333 | 225,365
Time-and-materials Contract [Member] | Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 222,314 | 196,092 | 192,264
Time-and-materials Contract [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 0 | 0 | 0
Time-and-materials Contract [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 14,310 | 6,806 | 7,119
Time-and-materials Contract [Member] | Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 51,583 | 38,435 | 25,982
industrial Services [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 53,291 | 46,091 | 65,686
Custom Power Solutions [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 297,805 | 171,262 | 101,427
Single Family Contracts [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 732,334 | 717,386 | 660,602
Multi Family and Other [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 331,595 | 318,233 | 305,909
Single Family Plumbing HVAC | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 324,911 | $ 243,885 | $ 164,903

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