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v3.26.1

Revenue (Details-1) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Total Operating Revenue [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | $ 161,195 | $ 159,452 | $ 403,898 | $ 378,422
Electric [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 131,380 | 129,313 | 262,760 | 254,767
Electric [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 43,930 | 43,182 | 89,244 | 88,321
Electric [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 65,618 | 64,027 | 127,037 | 124,662
Electric [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 3,274 | 3,117 | 6,122 | 6,081
Electric [Member] | Other-retail/municipal |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 10,852 | 10,342 | 20,186 | 19,690
Electric [Member] | Total Retail [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 123,674 | 120,668 | 242,589 | 238,754
Electric [Member] | Sales To The Market [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 7,026 | 7,840 | 18,635 | 14,320
Electric [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 680 | 805 | 1,536 | 1,693
Gas [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 29,601 | 29,925 | 140,864 | 123,406
Gas [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 18,007 | 17,956 | 80,771 | 71,824
Gas [Member] | Commercial/Industrial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 9,859 | 10,434 | 55,364 | 47,547
Gas [Member] | Total Retail [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 27,866 | 28,390 | 136,135 | 119,371
Gas [Member] | Gas Transportation [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 1,555 | 1,384 | 4,322 | 3,697
Gas [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | 180 | 151 | 407 | 338
Non Regulated Energy [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized from contracts with customers | $ 214 | $ 214 | $ 274 | $ 249

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