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v3.23.3

Revenue Recognition (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 2,377,227 | $ 2,166,808 | $ 1,536,493
Contract with Customer, Liability, Revenue Recognized | 82,520 | 52,683 |
Capitalized Contract Cost, Impairment Loss | 0 | 0 | 0
Unbilled Receivables, Current | 4,523 |  |
Contract with Customer, Liability, Revenue Recognized | 82,520 | 52,683 |
Performance Obligation Next 12 Months | 921,656 |  |
Revenue, Remaining Performance Obligation, Amount | 1,143,423 |  |
Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 600,776 | 559,777 | 445,968
Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,279,504 | 1,131,414 | 687,347
Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 217,353 | 167,113 | 146,980
Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 279,594 | 308,504 | 256,198
Fixed-price Contract [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 2,135,894 | 1,941,443 | 1,397,921
Fixed-price Contract [Member] | Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 404,684 | 367,513 | 327,496
Fixed-price Contract [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,279,504 | 1,131,414 | 687,347
Fixed-price Contract [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 210,547 | 159,994 | 139,532
Fixed-price Contract [Member] | Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 241,159 | 282,522 | 243,546
Time-and-materials Contract [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 241,333 | 225,365 | 138,572
Time-and-materials Contract [Member] | Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 196,092 | 192,264 | 118,472
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 | 6,806 | 7,119 | 7,448
Time-and-materials Contract [Member] | Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 38,435 | 25,982 | 12,652
industrial Services [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 46,091 | 65,686 | 44,427
Custom Power Solutions [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 171,262 | 101,427 | 102,553
Single Family Contracts [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 961,271 | 825,505 | 454,449
Multi Family and Other [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 318,233 | $ 305,909 | $ 232,898

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