Business Segments (Reconciliation Of Segment Results To Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Segment Reporting [Abstract]
Income from construction operations	$ 49,704	$ 47,227
Other income, net	175	481
Interest expense	(17,810)	(16,436)
Income before income taxes	$ 32,069	$ 31,272

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details