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Contracts in Progress (Tables)
 9 Months Ended
Sep. 30, 2016
Contractors [Abstract]  
Summary of Contracts in Progress
Contracts in progress are as follows at September 30, 2016 and December 31, 2015:
 
September 30,
2016
 
December 31,
2015
Costs incurred on uncompleted contracts
$
872,607

 
$
782,934

Estimated earnings
167,697

 
132,694

 
1,040,304

 
915,628

Less: Billings to date
(1,017,152
)
 
(884,504
)
 
$
23,152

 
$
31,124

Included in the accompanying condensed consolidated balance sheet under the following captions:
 

 
 

Costs and estimated earnings in excess of billings on uncompleted contracts
$
52,720

 
$
59,608

Billings in excess of costs and estimated earnings on uncompleted contracts
(29,568
)
 
(28,484
)
 
$
23,152

 
$
31,124