COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Costs incurred on uncompleted Contracts	$ 523,311,736	$ 494,901,886
Estimated earnings	101,672,746	97,984,749
Sub-total	624,984,482	592,886,635
Less billings to date	524,214,904	493,423,446
Totals	100,769,578	99,463,189
US Government [Member]
Costs incurred on uncompleted Contracts	357,970,228	341,003,461
Estimated earnings	40,585,938	39,638,231
Sub-total	398,556,166	380,641,692
Less billings to date	349,494,171	331,277,942
Totals	49,061,995	49,363,750
Commercial [Member]
Costs incurred on uncompleted Contracts	165,341,508	153,898,425
Estimated earnings	61,086,808	58,346,518
Sub-total	226,428,316	212,244,943
Less billings to date	174,720,733	162,145,504
Totals	$ 51,707,583	$ 50,099,439