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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2021
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | We present our operating revenues to external customers, in total and by amounts arising from contracts with customers and ARP arrangements, disaggregated by revenue source and segment for the years ended December 31, 2021, 2020 and 2019:
(in thousands) | 2021 |  | 2020 |  | 2019
Operating Revenues |  |  |  |  |
Electric Segment |  |  |  |  |
Retail: Residential | $ | 135,361 |  |  | $ | 127,260 |  |  | $ | 131,988 |
Retail: Commercial and Industrial | 262,408 |  |  | 254,951 |  |  | 267,125 |
Retail: Other | 7,715 |  |  | 7,311 |  |  | 7,365 |
Total Retail | 405,484 |  |  | 389,522 |  |  | 406,478 |
Transmission | 48,835 |  |  | 44,001 |  |  | 40,542 |
Wholesale | 17,936 |  |  | 4,857 |  |  | 5,007 |
Other | 8,066 |  |  | 7,708 |  |  | 7,021 |
Total Electric Segment | 480,321 |  |  | 446,088 |  |  | 459,048 |
Manufacturing Segment |  |  |  |  |
Metal Parts and Tooling | 283,527 |  |  | 199,463 |  |  | 236,032 |
Plastic Products and Tooling | 40,231 |  |  | 34,055 |  |  | 35,173 |
Other | 12,536 |  |  | 5,252 |  |  | 5,999 |
Total Manufacturing Segment | 336,294 |  |  | 238,770 |  |  | 277,204 |
Plastics Segment |  |  |  |  |
PVC Pipe | 380,229 |  |  | 205,249 |  |  | 183,251 |
Total Operating Revenue | 1,196,844 |  |  | 890,107 |  |  | 919,503 |
Less: Noncontract Revenues Included Above |  |  | — |  |  | — |
Electric Segment - ARP Revenues | (791) |  |  | 6,936 |  |  | 1,032 |
Total Operating Revenues from Contracts with Customers | $ | 1,197,635 |  |  | $ | 883,171 |  |  | $ | 918,471 |

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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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