Segment Information (Tables)

6 Months Ended

Jun. 30, 2025

Segment Reporting [Abstract]

Schedule of segment reporting

	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
	Amount		Amount		Amount		Amount
Marine	(dollar amounts in thousands)				(dollar amounts in thousands)
Contract revenues	$	135,302	$	130,953	$	262,465	$	237,278
Cost of contract revenues		115,156		120,878		223,794		220,998
Gross profit		20,146		10,075		38,671		16,280
Selling, general and administrative expenses		14,141		15,604		28,059		26,759
Gain on disposal of assets, net		(225)		(62)		(396)		(146)
Operating income (loss)	$	6,230	$	(5,467)	$	11,008	$	(10,333)
Total assets	$	345,833	$	322,031	$	345,833	$	322,031
Property and equipment, net	$	93,676	$	80,115	$	93,676	$	80,115
Depreciation and amortization	$	4,373	$	4,922	$	8,904	$	9,852
Capital expenditures	$	6,875	$	3,269	$	15,846	$	4,776
Concrete
Contract revenues	$	69,984	$	61,214	$	131,474	$	115,561
Cost of contract revenues		64,333		53,008		121,333		98,022
Gross profit		5,651		8,206		10,141		17,539
Selling, general and administrative expenses		8,633		5,531		17,260		13,375
Gain on disposal of assets, net		(184)		(24)		(376)		(277)
Operating (loss) income	$	(2,798)	$	2,699	$	(6,743)	$	4,441
Total assets	$	86,890	$	91,988	$	86,890	$	91,988
Property and equipment, net	$	4,001	$	5,860	$	4,001	$	5,860
Depreciation and amortization	$	858	$	1,049	$	1,730	$	2,138
Capital expenditures	$	257	$	1,365	$	319	$	1,711