Segment Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of segment reporting

	Year Ended		Year Ended
	December 31, 2020		December 31, 2019
Marine
Contract revenues	$	388,173	$	369,138
Operating income		16,935		1,057
Depreciation and amortization expense		(18,369)		(19,889)
Total assets	$	290,372	$	264,681
Property and equipment, net		109,298		114,873
Concrete
Contract revenues	$	321,769	$	339,252
Operating income		9,651		1,136
Depreciation and amortization expense		(8,848)		(8,519)
Total assets	$	123,817	$	130,163
Property and equipment, net		16,199		17,475