Segment Information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Schedule of segment reporting

	Year Ended December 31,
	2022		2021		2020
Marine
Contract revenues	$	339,213	$	263,915	$	388,173
Operating income		9,787		5,760		29,815
Depreciation and amortization expense		(16,592)		(17,287)		(18,369)
Total assets	$	239,369	$	236,773	$
Property and equipment, net		91,390		93,383
Concrete
Contract revenues	$	409,109	$	337,445	$	321,769
Operating loss		(17,817)		(15,077)		(3,229)
Depreciation and amortization expense		(7,465)		(8,143)		(8,848)
Total assets	$	127,786	$	114,977	$
Property and equipment, net		9,587		13,271