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Revenue (Tables) | 3 Months Ended
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Dec. 31, 2024
Revenue from Contract with Customer [Abstract] |
Schedule of Contract Asset and Liabilities | Contract assets and liabilities as of December 31, 2024 and September 30, 2024 are summarized below (in thousands):
| December 31, 2024 |  | September 30, 2024
Contract assets | $ | 92,349 |  |  | $ | 102,827 |
Contract liabilities | (282,595) |  |  | (287,763) |
Net contract liability | $ | (190,246) |  |  | $ | (184,936) |
Schedule of Disaggregation of Revenue | The following tables present our disaggregated revenue by geographic destination and market sector for the three months ended December 31, 2024 and 2023 (in thousands):
| Three months ended December 31, |  |
| 2024 |  | 2023 |  |  |  |
United States | $ | 197,772 |  |  | $ | 159,860 |  |  |  |  |
Canada | 31,694 |  |  | 20,350 |  |  |  |  |
Europe | 5,528 |  |  | 6,532 |  |  |  |  |
Middle East and Africa | 4,558 |  |  | 3,275 |  |  |  |  |
Mexico, Central and South America | 299 |  |  | 2,657 |  |  |  |  |
Asia/Pacific | 1,580 |  |  | 1,343 |  |  |  |  |
Total revenues by geographic destination | $ | 241,431 |  |  | $ | 194,017 |  |  |  |  |
| Three months ended December 31, |  |
| 2024 |  | 2023 |  |  |  |
Oil and gas (excludes petrochemical) | $ | 95,679 |  |  | $ | 83,636 |  |  |  |  |
Petrochemical | 33,183 |  |  | 28,367 |  |  |  |  |
Electric utility | 51,240 |  |  | 40,703 |  |  |  |  |
Commercial and other industrial | 44,300 |  |  | 24,672 |  |  |  |  |
Light rail traction power | 8,228 |  |  | 4,345 |  |  |  |  |
All others | 8,801 |  |  | 12,294 |  |  |  |  |
Total revenues by market sector | $ | 241,431 |  |  | $ | 194,017 |  |  |  |  |

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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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