Revenue (Tables)

9 Months Ended

Sep. 30, 2025

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2025		2024		2025		2024
Marine Segment
Construction	$	116,815	$	123,141	$	336,128	$	327,955
Dredging		23,761		12,902		58,372		39,649
Specialty services		2,367		3,970		10,909		9,687
Marine segment contract revenues	$	142,943	$	140,013	$	405,409	$	377,291
Concrete Segment
Structural	$	11,482	$	15,572	$	37,785	$	44,040
Light commercial		70,672		71,090		175,843		158,183
Concrete segment contract revenues	$	82,154	$	86,662	$	213,628	$	202,223
Total contract revenues	$	225,097	$	226,675	$	619,037	$	579,514