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Stock-Based Compensation (Summary Of Compensation Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expenses	$ 2,487	$ 986	$ 5,734	$ 2,174
Income tax benefit	629	248	1,450	545
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expenses	1,317	508	3,845	2,078
Income tax benefit	334	128	973	521
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expenses	308	32	1,417	233
Income tax benefit	77	8	356	58
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expenses	13	13	37	37
Income tax benefit	4	$ 3	10	10
Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expenses	810		810	840
Income tax benefit	$ 221		$ 221	$ 233

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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