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Revenue From Contracts With Customers (Tables)
 3 Months Ended
Mar. 31, 2018
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
Revenue by contract type (amounts in thousands):
 
 
Three Months Ended
March 31,
 
 
2018
 
2017
Fixed Unit Price
 
$
160,236

 
$
144,361

Lump Sum and Other
 
27,005

 
9,055

Heavy Civil Construction Revenue
 
$
187,241

 
$
153,416

The following table presents total revenue from operations by reportable segment for the three months ended March 31, 2018 and 2017 (amounts in thousands):
 
 
Three Months Ended
March 31,
 
 
2018
 
2017
Revenue
 
 

 
 

Heavy Civil Construction
 
$
187,241

 
$
153,416

Residential Construction
 
35,251

 
—

Total Revenue
 
$
222,492

 
$
153,416

Revenue by major end market (amounts in thousands):
 
 
Three Months Ended
March 31,
 
 
2018
 
2017
Heavy Highway
 
$
107,408

 
$
109,385

Water Containment and Treatment
 
14,995

 
9,596

Aviation
 
23,252

 
10,590

Commercial and Other
 
41,586

 
23,845

Heavy Civil Construction Revenue
 
$
187,241

 
$
153,416
Costs in Excess of Billings and Billings in Excess of Costs
The table below reconciles the net excess billings to the amounts included in the condensed consolidated balance sheets at those dates (amounts in thousands).
 
As of March 31,
 
2018
 
2017
Costs and estimated earnings in excess of billings on uncompleted contracts
$
40,013

 
$
34,475

Billings in excess of costs and estimated earnings on uncompleted contracts
(54,689
)
 
(62,656
)
Net amount of costs and estimated earnings on uncompleted contracts below billings
$
(14,676
)
 
$
(28,181
)