Revenue (Tables)

6 Months Ended

Jun. 30, 2024

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

	Three months ended June 30,				Six months ended June 30,
	2024		2023		2024		2023
Marine Segment
Construction	$	116,025	$	77,721	$	204,814	$	131,733
Dredging		12,077		14,819		26,747		35,549
Specialty Services		2,851		8,003		5,717		12,559
Marine segment contract revenues	$	130,953	$	100,543	$	237,278	$	179,841
Concrete Segment
Structural	$	16,895	$	13,837	$	28,468	$	29,581
Light Commercial		44,319		68,154		87,093		132,286
Concrete segment contract revenues	$	61,214	$	81,991	$	115,561	$	161,867
Total contract revenues	$	192,167	$	182,534	$	352,839	$	341,708