Segment Information (Tables)

12 Months Ended

Dec. 31, 2023

Segment Reporting [Abstract]

Schedule of segment reporting

	Year Ended December 31,
	2023		2022		2021
Marine
Contract revenues	$	395,917	$	339,213	$	263,915
Operating income		3,670		9,787		5,760
Depreciation and amortization expense		(18,219)		(16,592)		(17,287)
Total assets	$	318,684	$	239,369
Property and equipment, net		82,215		91,390
Concrete
Contract revenues	$	315,861	$	409,109	$	337,445
Operating loss		(10,300)		(17,817)		(15,077)
Depreciation and amortization expense		(5,659)		(7,465)		(8,143)
Total assets	$	98,209	$	127,786
Property and equipment, net		5,619		9,587