Taxes Other Than Income Taxes (Components Of Taxes Other Than Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Taxes Other Than Income [Line Items]
Total taxes other than income	$ 25,024	$ 22,878
Property [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	8,877	8,104
Gross Receipts, Excise And Franchise [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	4,155	4,030
Payroll [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	7,658	6,632
Regulatory Assessments [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	1,900	1,684
Pumping Fees [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	1,496	1,466
Other [Member]
Taxes Other Than Income [Line Items]
Total taxes other than income	$ 938	$ 962