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Note 4 - Contracts in Progress
6 Months Ended
Jun. 30, 2017
Notes to Financial Statements  
Long-term Contracts or Programs Disclosure [Text Block]
NOTE
4:
CONTRACTS IN PROGRESS
 
Costs and estimated earnings in excess of billings on contracts in progress are summarized as follows:
 
   
June 30, 2017
   
December 31, 2016
 
                 
Costs incurred on contracts in progress
  $
7,417,135
    $
4,678,192
 
Estimated earnings
   
16,467,264
     
10,733,826
 
     
23,884,399
     
15,412,018
 
Billings to date
   
(23,841,934
)    
(18,077,839
)
    $
42,465
    $
(2,665,821
)
Included in accompanying balance sheets
under the following captions:
               
Costs and estimated earnings in excess
of billings on contracts in progress
  $
3,027,086
    $
2,596,518
 
                 
Billings in excess of costs and estimated
earnings on contracts in progress
  $
(2,984,621
)   $
(5,262,339
)
    $
42,465
    $
(2,665,821
)