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COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Details) (USD $)
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs incurred on uncompleted contracts $ 289,789,720   $ 257,524,854
Estimated earnings 116,245,469   109,102,921
Sub-total 406,035,189   366,627,775
Less billings to date 295,152,276   258,374,784
Costs and estimated earnings in excess of billings on uncompleted contracts 110,882,913   108,252,991
Costs and estimated earnings in excess of billings on uncompleted contracts 111,303,474   108,909,844
Billings in excess of costs and estimated earnings on uncompleted contracts (420,561)   (656,853)
Costs and estimated earnings in excess of billings on uncompleted contracts 110,882,913   108,252,991
Decrease in estimated gross profits on contracts due to revisions 2,797,000 528,000  
U.S. Government [Member]
      
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs incurred on uncompleted contracts 237,662,363   214,888,101
Estimated earnings 88,824,737   85,320,636
Sub-total 326,487,100   300,208,737
Less billings to date 242,302,347   215,743,090
Costs and estimated earnings in excess of billings on uncompleted contracts 84,184,753   84,465,647
Costs and estimated earnings in excess of billings on uncompleted contracts 84,184,753   84,465,647
Commercial [Member]
      
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs incurred on uncompleted contracts 52,127,357   42,636,753
Estimated earnings 27,420,732   23,782,285
Sub-total 79,548,089   66,419,038
Less billings to date 52,849,929   42,631,694
Costs and estimated earnings in excess of billings on uncompleted contracts 26,698,160   23,787,344
Costs and estimated earnings in excess of billings on uncompleted contracts $ 26,698,160   $ 23,787,344