Business Segments (Reconciliation Of Segment Results To Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting [Abstract]
Income (loss) from construction operations	$ (6,892)	$ 52,093	$ (107,353)	$ 170,550
Other income (expense)	397	(464)	5,114	1,142
Interest expense	(17,015)	(16,694)	(49,711)	(52,442)
INCOME (LOSS) BEFORE INCOME TAXES	$ (23,510)	$ 34,935	$ (151,950)	$ 119,250