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Revenue (Tables) | 6 Months Ended
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Mar. 31, 2022
Revenue from Contract with Customer [Abstract] |
Summary of Contract Asset and Liabilities | Contract assets and liabilities as of March 31, 2022 and September 30, 2021 are summarized below (in thousands):
| March 31, 2022 |  | September 30, 2021
Contract assets | $ | 58,553 |  |  | $ | 54,199 |
Contract liabilities | (56,706) |  |  | (42,433) |
Net contract asset | $ | 1,847 |  |  | $ | 11,766 |
Disaggregation of Revenue | The following tables present our disaggregated revenue by geographic destination and market sector for the three and six months ended March 31, 2022 and 2021 (in thousands):
| Three months ended March 31, |  | Six months ended March 31,
| 2022 |  | 2021 |  | 2022 |  | 2021
United States | $ | 86,992 |  |  | $ | 87,939 |  |  | $ | 169,137 |  |  | $ | 168,525 |
Canada | 22,053 |  |  | 17,734 |  |  | 37,178 |  |  | 31,825 |
Europe, Middle East and Africa | 15,551 |  |  | 10,937 |  |  | 23,381 |  |  | 19,193 |
Asia/Pacific | 1,646 |  |  | 2,009 |  |  | 2,590 |  |  | 4,725 |
Mexico, Central and South America | 1,612 |  |  | 97 |  |  | 2,137 |  |  | 1,023 |
Total revenues by geographic destination | $ | 127,854 |  |  | $ | 118,716 |  |  | $ | 234,423 |  |  | $ | 225,291 |
| Three months ended March 31, |  | Six months ended March 31,
| 2022 |  | 2021 |  | 2022 |  | 2021
Oil and gas (excludes petrochemical) | $ | 53,634 |  |  | $ | 50,142 |  |  | $ | 96,655 |  |  | $ | 90,171 |
Petrochemical | 18,853 |  |  | 10,196 |  |  | 36,081 |  |  | 19,361 |
Electric utility | 30,374 |  |  | 28,452 |  |  | 51,907 |  |  | 56,622 |
Traction power | 10,054 |  |  | 15,140 |  |  | 21,426 |  |  | 28,501 |
All others | 14,939 |  |  | 14,786 |  |  | 28,354 |  |  | 30,636 |
Total revenues by market sector | $ | 127,854 |  |  | $ | 118,716 |  |  | $ | 234,423 |  |  | $ | 225,291 |

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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 http://asc.fasb.org/extlink&oid=123351226&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 http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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