Revenue Recognition (Summary Of Derived Revenue And Other Income) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue Recognition [Abstract]
Revenue from contracts with customers	$ 150,818	$ 146,435	$ 281,261	$ 282,451
Cost recovery income	991	1,066	991	1,066
Total revenue	$ 151,809	$ 147,501	$ 282,252	$ 283,517

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details