Contract Assets and Liabilities (Schedule of Contract Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Retention payable	$ 227,731	$ 223,138
Billings in excess of costs and estimated earnings	1,002,268	1,103,530
Total contract liabilities	$ 1,229,999	$ 1,326,668