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7. CONTRACTS IN PROGRESS (Tables)
12 Months Ended
Dec. 31, 2012
Schedule of Contracts in Progress [Table Text Block]
A summary of contracts in progress at December 31 is as follows:

   
2012
   
2011
 
Costs incurred to date
  $ 7,577,349     $ 4,158,690  
Estimated earnings
    4,135,820       1,957,728  
Revenue recognized to date
    11,713,169       6,116,418  
Billings to date
    (11,316,592 )     (5,678,483 )
    $ 396,577     $ 437,935  
Included in the accompanying balance sheets:
               
Costs in excess of billings on uncompleted contracts (unbilled receivables)
  $ 702,725     $ 638,950  
Billings in excess of costs on uncompleted contracts
    (306,148 )     (201,015 )
    $ 396,577     $ 437,935