COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Costs incurred on uncompleted Contracts	$ 510,446,348	$ 494,901,886
Estimated earnings	100,989,205	97,984,749
Sub-total	611,435,553	592,886,635
Less billings to date	509,827,442	493,423,446
Totals	101,608,111	99,463,189
US Government [Member]
Costs incurred on uncompleted Contracts	350,245,484	341,003,461
Estimated earnings	41,604,960	39,638,231
Sub-total	391,850,444	380,641,692
Less billings to date	340,937,961	331,277,942
Totals	50,912,483	49,363,750
Commercial [Member]
Costs incurred on uncompleted Contracts	160,200,864	153,898,425
Estimated earnings	59,384,245	58,346,518
Sub-total	219,585,109	212,244,943
Less billings to date	168,889,481	162,145,504
Totals	$ 50,695,628	$ 50,099,439