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Revenue Recognition (Schedule Of Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ 435,255 | $ 411,255 | $ 1,481,730 | $ 1,574,405
Regulated Water [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 279,241 | 258,367 | 757,420 | 717,819
Revenue | 280,023 | 258,801 | 759,882 | 719,422
Regulated Water [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 182,616 | 173,331 | 499,859 | 487,704
Regulated Water [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 52,577 | 49,699 | 140,110 | 137,427
Regulated Water [Member] | Fire Protection [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 10,670 | 10,350 | 31,793 | 30,794
Regulated Water [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 9,747 | 9,438 | 26,527 | 25,584
Regulated Water [Member] | Other Water [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 23,631 | 15,549 | 59,131 | 36,310
Regulated Water [Member] | Alternative Revenue Program [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 782 | 434 | 2,462 | 1,603
Wastewater [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 51,722 | 48,819 | 148,651 | 140,153
Revenue | 51,777 | 48,892 | 148,579 | 140,435
Wastewater [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 37,450 | 36,096 | 109,097 | 103,632
Wastewater [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 9,779 | 9,396 | 27,569 | 26,643
Wastewater [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 1,043 | 500 | 2,149 | 1,587
Wastewater [Member] | Other Wastewater [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 3,450 | 2,827 | 9,836 | 8,291
Wastewater [Member] | Alternative Revenue Program [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 55 | 73 | (72) | 282
Regulated Natural Gas [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 96,374 | 94,798 | 547,757 | 673,655
Revenue | 96,731 | 94,798 | 549,250 | 675,076
Regulated Natural Gas [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 49,398 | 46,501 | 326,921 | 415,207
Regulated Natural Gas [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 9,838 | 9,577 | 66,417 | 91,031
Regulated Natural Gas [Member] | Industrial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 228 | 353 | 1,475 | 2,613
Regulated Natural Gas [Member] | Gas Transportation [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 27,576 | 26,636 | 133,458 | 129,151
Regulated Natural Gas [Member] | Other Utility [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 9,334 | 11,731 | 19,486 | 35,653
Regulated Natural Gas [Member] | Alternative Revenue Program [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 357 |  | 1,493 | 1,421
Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 2,677 | 2,898 | 8,389 | 11,706
Revenue | 6,724 | 8,764 | 24,019 | 39,472
Other [Member] | Other Utility [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 2,677 | 2,898 | 8,389 | 11,706
Other [Member] | Other And Eliminations [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ 4,047 | $ 5,866 | $ 15,630 | $ 27,766

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