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v3.22.2.2

Revenue Recognition (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 2,166,808 | $ 1,536,493 | $ 1,190,856
Unbilled Receivables, Current | 19,296 |  |
Contract with Customer, Liability, Revenue Recognized | 52,683 | 47,906 |
Performance Obligation Next 12 Months | 776,897 |  |
Revenue, Remaining Performance Obligation, Amount | 967,000 |  |
Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 559,777 | 445,968 | 395,141
Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,131,414 | 687,347 | 411,790
Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 167,113 | 146,980 | 128,379
Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 308,504 | 256,198 | 255,546
Fixed-price Contract [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,941,443 | 1,397,921 | 1,085,143
Fixed-price Contract [Member] | Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 367,513 | 327,496 | 309,567
Fixed-price Contract [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,131,414 | 687,347 | 411,790
Fixed-price Contract [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 159,994 | 139,532 | 121,922
Fixed-price Contract [Member] | Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 282,522 | 243,546 | 241,864
Time-and-materials Contract [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 225,365 | 138,572 | 105,713
Time-and-materials Contract [Member] | Communications [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 192,264 | 118,472 | 85,574
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 | 7,119 | 7,448 | 6,457
Time-and-materials Contract [Member] | Commercial and Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 25,982 | 12,652 | 13,682
industrial Services [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 65,686 | 44,427 | 40,701
Custom Power Solutions [Member] | Infrastructure Solutions [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 101,427 | 102,553 | 87,678
Single Family Contracts [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 825,505 | 454,449 | 239,140
Multi Family and Other [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 305,909 | $ 232,898 | $ 172,650

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