COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Costs incurred on uncompleted Contracts	$ 557,150,326	$ 494,901,886
Estimated earnings	110,050,035	97,984,749
Sub-total	667,200,361	592,886,635
Less billings to date	556,116,467	493,423,446
Totals	111,083,894	99,463,189
US Government [Member]
Costs incurred on uncompleted Contracts	380,585,374	341,003,461
Estimated earnings	44,708,920	39,638,231
Sub-total	425,294,294	380,641,692
Less billings to date	370,755,359	331,277,942
Totals	54,538,935	49,363,750
Commercial [Member]
Costs incurred on uncompleted Contracts	176,564,952	153,898,425
Estimated earnings	65,341,115	58,346,518
Sub-total	241,906,067	212,244,943
Less billings to date	185,361,108	162,145,504
Totals	$ 56,544,959	$ 50,099,439