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Costs, Estimated Earnings, and Related Billings on Uncompleted Contracts (Tables)
 12 Months Ended
Dec. 31, 2017
Contractors [Abstract]  
Costs, Estimated Earnings, and Related Billings on Uncompleted Contracts

Contracts in progress at December 31, 2017 and 2016 consisted of the following:

 

 

2017

 

 

2016

 

 

(in thousands)

 

Costs incurred on uncompleted contracts

$

32,488

 

 

$

26,340

 

Estimated earnings

 

6,172

 

 

 

1,193  

 

 

 

38,660

 

 

 

27,533

 

Billings on uncompleted contracts

 

(34,018

)

 

 

(21,912

)

 

$

4,642

 

 

$

5,621

 

Costs, estimated earnings, and related billing on uncompleted contracts consisted of the following at December 31, 2017 and 2016:

 

2017

 

 

2016

 

 

(in thousands)

 

Cost and estimated earnings in excess of billings on uncompleted contracts

$

6,434

 

 

$

5,829

 

Billings in excess of costs and estimated earnings on uncompleted contracts

 

(1,792

)

 

 

(208

)

 

$

4,642

 

 

$

5,621