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+ Details

Related Party Transaction (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 10, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Party
Contract revenues		$ 168,476	$ 182,621	$ 510,184	$ 552,127
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	$ 435,400
Contract revenues		$ 17,300		$ 42,800