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Contracts in Progress
 6 Months Ended
Jun. 30, 2019
Contractors [Abstract]  
Contracts in Progress
Contracts in Progress

Contracts in progress are as follows at June 30, 2019 and December 31, 2018:
 
June 30,
2019
 
December 31,
2018
Costs incurred on uncompleted contracts
$
630,685

 
$
461,144

Estimated earnings
112,786

 
73,170

 
743,471

 
534,314

Less: Billings to date
(771,794
)
 
(546,858
)
 
$
(28,323
)
 
$
(12,544
)
Included in the accompanying Consolidated Balance Sheet under the following captions:
 

 
 

Costs and estimated earnings in excess of billings on uncompleted contracts
$
23,641

 
$
9,217

Billings in excess of costs and estimated earnings on uncompleted contracts
(51,964
)
 
(21,761
)
 
$
(28,323
)
 
$
(12,544
)


As of June 30, 2019 and December 31, 2018, included in cost and estimated earnings in excess of billings on uncompleted projects is approximately $1.1 million related to claims and unapproved change orders.