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COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS ON UNCOMPLETED CONTRACTS (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs Incurred On Uncompleted Contracts $ 257,524,854 $ 186,947,009  
Estimated earnings 109,102,921 87,913,307  
Sub-total 366,627,775 274,860,316  
Less billings to date 258,374,784 195,849,954  
Costs and estimated earnings in excess of billings on uncompleted contracts 108,252,991 79,010,362  
Costs and estimated earnings in excess of billings on uncompleted contracts 108,909,844 79,126,828  
Billings in excess of costs and estimated earnings on uncompleted contracts (656,853) (116,466)  
Costs and estimated earnings in excess of billings on uncompleted contracts 108,252,991 79,010,362  
Costs and estimated earnings in excess of billings not expected to be collected within one year 20,000,000    
Amount billed under retainage provisions 0    
Decrease in estimated gross profits on contracts due to revisions 1,000,000 3,000,000 10,200,000
U.S. Government [Member]
      
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs Incurred On Uncompleted Contracts 214,888,101 162,233,699  
Estimated earnings 85,320,636 72,883,505  
Sub-total 300,208,737 235,117,204  
Less billings to date 215,743,090 171,694,325  
Costs and estimated earnings in excess of billings on uncompleted contracts 84,465,647 63,422,879  
Costs and estimated earnings in excess of billings on uncompleted contracts 84,465,647 63,422,879  
Commercial [Member]
      
Costs and Estimated Earnings on Uncompleted Contracts [Line Items]      
Costs Incurred On Uncompleted Contracts 42,636,753 24,713,310  
Estimated earnings 23,782,285 15,029,802  
Sub-total 66,419,038 39,743,112  
Less billings to date 42,631,694 24,155,629  
Costs and estimated earnings in excess of billings on uncompleted contracts 23,787,344 15,587,483  
Costs and estimated earnings in excess of billings on uncompleted contracts $ 23,787,344 $ 15,587,483