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Revenue (Tables) | 12 Months Ended
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Sep. 30, 2021
Revenue from Contract with Customer [Abstract] |
Contract Assets and Liabilities | Contract assets and liabilities as of September 30, 2021 and September 30, 2020 are summarized below (in thousands):
| September 30,
| 2021 |  | 2020
Contract assets | $ | 54,199 |  |  | $ | 50,995 |
Contract liabilities | (42,433) |  |  | (79,445) |
Net contract asset (liability) | $ | 11,766 |  |  | $ | (28,450) |
Disaggregation of Revenue | The following tables present our disaggregated revenue by geographic destination and market sector for the years ended September 30, 2021 and September 30, 2020 (in thousands):
| 2021 |  | 2020
United States | $ | 351,422 |  |  | $ | 397,983 |
Canada | 68,655 |  |  | 66,064 |
Europe, Middle East and Africa | 39,642 |  |  | 34,028 |
Asia/Pacific | 8,889 |  |  | 18,079 |
Mexico, Central and South America | 1,951 |  |  | 2,345 |
Total revenues by geographic destination | $ | 470,559 |  |  | $ | 518,499 |
| 2021 |  | 2020
Oil and gas (excludes petrochemical) | $ | 187,660 |  |  | $ | 195,209 |
Petrochemical | 58,986 |  |  | 126,698 |
Electric utility | 111,244 |  |  | 88,818 |
Traction power | 59,106 |  |  | 42,373 |
All others | 53,563 |  |  | 65,401 |
Total revenues by market sector | $ | 470,559 |  |  | $ | 518,499 |

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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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