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Costs and Estimated Earnings on Uncompleted Contracts (Tables)
 9 Months Ended
Sep. 30, 2012
Costs and Estimated Earnings on Uncompleted Contracts Consist
     September 30,     December 31,  
     2012     2011  

Costs incurred on uncompleted contracts

    $ 6,479      $ 5,839   

Estimated earnings

      3,516        3,775   
  

 

 

    

 

 

  
     9,995        9,614   

Less: Billings to date

      9,967        9,886   
  

 

 

    

 

 

  
   $ 28      $ (272 ) 
  

 

 

    

 

 

  

Costs and estimated earnings in excess of billings on uncompleted contracts

    $ 1,065      $ 593   

Billings in excess of costs and estimated earnings on uncompleted contracts

      (1,037 )      (865 ) 
  

 

 

    

 

 

  
   $ 28      $ (272 )