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v3.25.3

Revenue (Tables) | 12 Months Ended
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Sep. 30, 2025
Revenue from Contract with Customer [Abstract] |
Schedule of Contract Assets and Liabilities | Contract assets and liabilities as of September 30, 2025 and September 30, 2024 are summarized below (in thousands):
| September 30,
| 2025 |  | 2024
Contract assets | $ | 136,679 |  |  | $ | 102,827 |
Contract liabilities | (297,949) |  |  | (287,763) |
Net contract liability | $ | (161,270) |  |  | $ | (184,936) |
Schedule of Disaggregation of Revenue | The following tables present our disaggregated revenue by geographic destination and market sector for the years ended September 30, 2025, 2024 and 2023 (in thousands):
| 2025 |  | 2024 |  | 2023
United States | $ | 880,222 |  |  | $ | 846,526 |  |  | $ | 557,934 |
Canada | 157,191 |  |  | 106,521 |  |  | 84,090 |
Middle East and Africa | 27,440 |  |  | 13,440 |  |  | 14,998 |
Europe | 25,072 |  |  | 31,388 |  |  | 26,699 |
Asia/Pacific | 9,283 |  |  | 6,850 |  |  | 6,188 |
Mexico, Central and South America | 5,110 |  |  | 7,631 |  |  | 9,399 |
Total revenues by geographic destination | $ | 1,104,318 |  |  | $ | 1,012,356 |  |  | $ | 699,308 |
| 2025 |  | 2024 |  | 2023
Oil and gas (excludes petrochemical) | $ | 406,565 |  |  | $ | 417,170 |  |  | $ | 273,117 |
Electric utility | 278,988 |  |  | 186,547 |  |  | 158,400 |
Commercial and other industrial | 178,222 |  |  | 149,899 |  |  | 103,966 |
Petrochemical | 151,166 |  |  | 185,606 |  |  | 94,188 |
Light rail traction power | 41,264 |  |  | 22,019 |  |  | 28,112 |
All others | 48,113 |  |  | 51,115 |  |  | 41,525 |
Total revenues by market sector | $ | 1,104,318 |  |  | $ | 1,012,356 |  |  | $ | 699,308 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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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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