Revenue (Tables)

9 Months Ended

Sep. 30, 2024

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

	Three months ended September 30,				Nine months ended September 30,
	2024		2023		2024		2023
Marine Segment
Construction	$	123,141	$	58,162	$	327,955	$	189,895
Dredging		12,902		9,444		39,649		44,993
Specialty Services		3,970		13,307		9,687		25,866
Marine segment contract revenues	$	140,013	$	80,913	$	377,291	$	260,754
Concrete Segment
Structural	$	15,572	$	12,268	$	44,040	$	41,849
Light Commercial		71,090		75,295		158,183		207,581
Concrete segment contract revenues	$	86,662	$	87,563	$	202,223	$	249,430
Total contract revenues	$	226,675	$	168,476	$	579,514	$	510,184