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Segment Information (Tables)
 6 Months Ended
Jun. 30, 2017
Segment Reporting [Abstract]  
Schedule of Segment Reporting
Segment information for the periods presented is provided as follows:

 
Three months ended June 30, 2017
Three months ended June 30, 2016
Six months ended June 30, 2017
Six months ended June 30, 2016
Marine Construction
 
 
 
 
         Contract revenues
$
62,003

$
79,966

$
129,183

$
142,381

         Operating loss
(8,617
)
(1,212
)
(16,323
)
(4,354
)
         Depreciation and amortization expense
(5,087
)
(5,176
)
(10,342
)
(10,243
)
 
 
 
 
 
         Total Assets
$
252,348

$
297,207

$
252,348

$
297,207

         Property, Plant and Equipment, net
135,492

149,912

135,492

$
149,912

 
 
 
 
 
Concrete Construction
 
 
 
 
        Contract revenues
$
75,417

$
60,335

$
146,994

$
127,543

        Operating income
6,150

1,493

12,375

4,180

        Depreciation and amortization expense
(2,505
)
(3,477
)
(4,777
)
(6,960
)
 
 
 
 
 
        Total Assets
$
174,124

$
146,127

$
174,124

$
146,127

        Property, Plant and Equipment, net
16,009

14,472

16,009

14,472