Taxes Other Than Income Taxes (Components Of Taxes Other Than Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Taxes Other Than Income [Line Items]
Total taxes other than income	$ 20,872	$ 22,233	$ 43,751	$ 47,257
Property [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	9,085	8,535	18,156	17,411
Gross Receipts, Excise And Franchise [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	4,600	4,297	7,486	8,600
Payroll [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	5,405	5,009	12,366	12,520
Regulatory Assessments [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	2,017	1,925	4,052	3,825
Pumping Fees [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	1,964	1,882	3,304	3,377
Other [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	$ (2,199)	$ 585	$ (1,613)	$ 1,524