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Contracts in Progress (Tables)
 3 Months Ended
Mar. 31, 2016
Contractors [Abstract]  
Summary of Contracts in Progress
Contracts in progress are as follows at March 31, 2016 and December 31, 2015:
 
March 31,
2016
 
December 31,
2015
Costs incurred on uncompleted contracts
$
747,613

 
$
782,934

Estimated earnings
115,007

 
132,694

 
862,620

 
915,628

Less: Billings to date
(842,090
)
 
(884,504
)
 
$
20,530

 
$
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
$
48,492

 
$
59,608

Billings in excess of costs and estimated earnings on uncompleted contracts
(27,962
)
 
(28,484
)
 
$
20,530

 
$
31,124