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Note 4 - Contracts in Progress
 6 Months Ended
Jun. 30, 2015
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, 2015
    
December 31, 2014
  
                 
Costs incurred on contracts in progress
   $ 4,888,161     $ 4,250,300  
Estimated earnings
     5,781,456       4,541,377  
      10,669,617       8,791,677  
Billings to date
     (7,740,478 )     (7,621,523 )
    $ 2,929,139     $ 1,170,154  
Included in accompanying balance sheets
under the following captions:
                
Costs and estimated earnings in excess
of billings on contracts in progress
   $ 3,329,357     $ 2,498,662  
                 
Billings in excess of costs and estimated
earnings on contracts in progress
   $ (400,218 )   $ (1,328,508 )