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v3.25.4

Revenue (Details-1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Total Operating Revenue [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | $ 743,654 | $ 676,944 | $ 690,431
Electric [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 531,554 | 497,673 | 489,729
Electric [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 187,264 | 174,756 | 171,137
Electric [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 258,044 | 255,240 | 252,268
Electric [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 12,330 | 12,948 | 13,759
Electric [Member] | Other-retail/municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 40,048 | 40,796 | 40,815
Electric [Member] | Total Retail [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 497,686 | 483,740 | 477,979
Electric [Member] | Sales To The Market [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 30,654 | 10,893 | 10,163
Electric [Member] | Other Revenues [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 3,214 | 3,040 | 1,587
Gas [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 211,423 | 178,587 | 200,012
Gas [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 123,719 | 106,150 | 116,640
Gas [Member] | Commercial/Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 80,560 | 65,021 | 75,410
Gas [Member] | Total Retail [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 204,279 | 171,171 | 192,050
Gas [Member] | Gas Transportation [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 6,582 | 6,905 | 7,399
Gas [Member] | Other Revenues [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | 562 | 511 | 563
Non Regulated Energy [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized from contracts with customers | $ 677 | $ 684 | $ 690

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