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Contracts in Progress (Tables)
 12 Months Ended
Dec. 31, 2018
Contractors [Abstract]  
Contracts in progress
Contracts in progress are as follows at December 31, 2018 and December 31, 2017:
 
December 31,
2018
 
December 31,
2017
Costs incurred on uncompleted contracts
$
461,144

 
$
668,848

Estimated earnings
73,170

 
120,751

 
534,314

 
789,599

Less: Billings to date
(546,858
)
 
(777,516
)
 
$
(12,544
)
 
$
12,083

Included in the accompanying consolidated balance sheets under the following captions:
 

 
 

Costs and estimated earnings in excess of billings on uncompleted contracts
9,217

 
$
46,006

Billings in excess of costs and estimated earnings on uncompleted contracts
(21,761
)
 
(33,923
)
 
$
(12,544
)
 
$
12,083