Segment Information (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Schedule of segment reporting

	Three months ended				Nine months ended
	September 30,				September 30,
		2021		2020		2021		2020
Marine
Contract revenues	$	54,739	$	112,881	$	190,827	$	290,549
Operating (loss) income	$	(4,965)	$	12,025	$	6,489	$	21,584
Depreciation and amortization expense	$	(4,232)	$	(4,543)	$	(12,912)	$	(14,063)
Total assets	$	252,332	$	258,894	$	252,332	$	258,894
Property and equipment, net	$	92,612	$	109,522	$	92,612	$	109,522
Concrete
Contract revenues	$	85,168	$	76,552	$	248,264	$	249,217
Operating (loss) income	$	(3,778)	$	1,060	$	(7,611)	$	(50)
Depreciation and amortization expense	$	(1,993)	$	(2,223)	$	(6,228)	$	(6,599)
Total assets	$	116,023	$	123,626	$	116,023	$	123,626
Property and equipment, net	$	14,073	$	16,389	$	14,073	$	16,389