Revenue (Tables)

6 Months Ended

Jun. 30, 2025

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Marine Segment
Construction	$	114,830	$	116,025	$	219,312	$	204,814
Dredging		17,700		12,077		34,611		26,747
Specialty services		2,772		2,851		8,542		5,717
Marine segment contract revenues	$	135,302	$	130,953	$	262,465	$	237,278
Concrete Segment
Structural	$	12,582	$	16,895	$	26,303	$	28,468
Light commercial		57,402		44,319		105,171		87,093
Concrete segment contract revenues	$	69,984	$	61,214	$	131,474	$	115,561
Total contract revenues	$	205,286	$	192,167	$	393,939	$	352,839