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+ Details

Contracts in Progress - Dragados/Hawaiian Dredging/Orion Joint Venture (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 10, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Related Party
Contract revenues		$ 226,675	$ 168,476	$ 579,514	$ 510,184
Dragados/Hawaiian Dredging/Orion Joint Venture \| US Navy
Related Party
Contract awarded	$ 2,800,000
Dragados/Hawaiian Dredging/Orion Joint Venture
Related Party
Contract awarded	$ 447,600
Contract revenues		$ 57,200	$ 17,300	$ 150,700	$ 42,800	$ 90,500