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COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Details) (USD $)
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs incurred on uncompleted contracts $ 222,310,800   $ 186,947,009
Estimated earnings 94,853,938   87,913,307
Sub-total 317,164,738   274,860,316
Less billings to date 228,447,072   195,849,954
Costs and estimated earnings in excess of billings on uncompleted contracts 88,717,666   79,010,362
Decrease in estimated gross profits on contracts due to revisions 528,000 1,800,000  
U.S. Government [Member]
      
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs incurred on uncompleted contracts 189,660,656   162,233,699
Estimated earnings 76,045,372   72,883,505
Sub-total 265,706,028   235,117,204
Less billings to date 194,687,800   171,694,325
Costs and estimated earnings in excess of billings on uncompleted contracts 71,018,228   63,422,879
Commercial [Member]
      
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs incurred on uncompleted contracts 32,650,144   24,713,310
Estimated earnings 18,808,566   15,029,802
Sub-total 51,458,710   39,743,112
Less billings to date 33,759,272   24,155,629
Costs and estimated earnings in excess of billings on uncompleted contracts $ 17,699,438   $ 15,587,483