Description Of Business And Segment Reporting (Summary Of Capital Expenditures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total capital expenditures	$ 4,711	$ 9,780	$ 14,428
Segment [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	$ 4,711	$ 9,780	$ 14,428