Description Of Business And Segment Reporting (Summary Of Capital Expenditures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total capital expenditures	$ 9,780	$ 14,428	$ 16,759
Segment [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	$ 9,780	$ 14,428	16,686
Corporate [Member]
Segment Reporting Information [Line Items]
Total capital expenditures			$ 73