Income Taxes (Significant Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Timing of expense recognition	$ 72,828	$ 49,939
Net operating losses	113,623	82,210
Goodwill	80	6,022
Other, net	16,113	24,105
Deferred tax assets	202,644	162,276
Valuation allowance	(9,193)	(8,846)
Net deferred tax assets	193,451	153,430
Deferred tax liabilities:
Intangible assets, due primarily to purchase accounting	(17,451)	(16,850)
Fixed assets	(54,953)	(66,130)
Construction contract accounting	(7,711)	(7,940)
Joint ventures	(16,132)	(32,983)
Other	(24,077)	(18,266)
Deferred tax liabilities	(120,324)	(142,169)
Net deferred tax assets	73,127	11,261
Net Deferred Tax Liabilities
DEFERRED INCOME TAXES	74,083	15,910
Deferred tax liabilities	(956)	(4,649)
Net deferred tax assets	$ 73,127	$ 11,261