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+ Details

Contracts in Progress - Dragados/Hawaiian Dredging/Orion Joint Venture (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 10, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Related Party
Contract revenues		$ 192,167	$ 182,534	$ 352,839	$ 341,708
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		$ 55,500	$ 25,500	$ 93,500	$ 25,500	$ 90,500