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Revenue (Tables) | 9 Months Ended
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Jun. 30, 2022
Revenue from Contract with Customer [Abstract] |
Summary of Contract Asset and Liabilities | Contract assets and liabilities as of June 30, 2022 and September 30, 2021 are summarized below (in thousands):
| June 30, 2022 |  | September 30, 2021
Contract assets | $ | 68,245 |  |  | $ | 54,199 |
Contract liabilities | (66,582) |  |  | (42,433) |
Net contract asset | $ | 1,663 |  |  | $ | 11,766 |
Disaggregation of Revenue | The following tables present our disaggregated revenue by geographic destination and market sector for the three and nine months ended June 30, 2022 and 2021 (in thousands):
| Three months ended June 30, |  | Nine months ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
United States | $ | 102,931 |  |  | $ | 88,412 |  |  | $ | 272,069 |  |  | $ | 256,937 |
Canada | 23,599 |  |  | 16,529 |  |  | 60,777 |  |  | 48,354 |
Europe, Middle East and Africa | 6,697 |  |  | 8,926 |  |  | 30,078 |  |  | 28,120 |
Asia/Pacific | 1,645 |  |  | 1,651 |  |  | 4,235 |  |  | 6,376 |
Mexico, Central and South America | 611 |  |  | 295 |  |  | 2,748 |  |  | 1,318 |
Total revenues by geographic destination | $ | 135,483 |  |  | $ | 115,813 |  |  | $ | 369,907 |  |  | $ | 341,105 |
| Three months ended June 30, |  | Nine months ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Oil and gas (excludes petrochemical) | $ | 58,669 |  |  | $ | 49,272 |  |  | $ | 155,324 |  |  | $ | 139,443 |
Petrochemical | 15,187 |  |  | 15,365 |  |  | 51,268 |  |  | 34,725 |
Electric utility | 30,173 |  |  | 26,175 |  |  | 82,079 |  |  | 82,797 |
Traction power | 9,775 |  |  | 13,821 |  |  | 31,200 |  |  | 42,322 |
All others | 21,679 |  |  | 11,180 |  |  | 50,036 |  |  | 41,818 |
Total revenues by market sector | $ | 135,483 |  |  | $ | 115,813 |  |  | $ | 369,907 |  |  | $ | 341,105 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 + Details
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