COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Tables)

12 Months Ended

Dec. 31, 2017

Contractors [Abstract]

Schedule of costs and estimated earnings in excess of billings on uncompleted contracts (unbilled)

At December 31, 2017, costs and estimated earnings in excess of billings on uncompleted contracts (unbilled) consist of: 

	U.S. Government		Commercial		Total
Costs incurred on uncompleted contracts	$	380,585,374	$	176,564,952	$	557,150,326
Estimated earnings		44,708,920		65,341,115		110,050,035
		425,294,294		241,906,067		667,200,361
Less billings to date		370,755,359		185,361,108		556,116,467
Costs and estimated earnings in excess of billings on uncompleted contracts	$	54,538,935	$	56,544,959	$	111,083,894

At December 31, 2016, costs and estimated earnings in excess of billings on uncompleted contracts (unbilled) consist of:

	U.S. Government		Commercial		Total
Costs incurred on uncompleted contracts	$	341,003,461	$	153,898,425	$	494,901,886
Estimated earnings		39,638,231		58,346,518		97,984,749
		380,641,692		212,244,943		592,886,635
Less billings to date		331,277,942		162,145,504		493,423,446
Costs and estimated earnings in excess of billings on uncompleted contracts	$	49,363,750	$	50,099,439	$	99,463,189

Schedule of costs and estimated earnings in excess of billings on uncompleted contracts included in balance sheet

The above amounts are included in the accompanying balance sheets under the following captions at December 31, 2017 and 2016.

	2017			2016
Costs and estimated earnings in excess of billings on uncompleted contracts	$	111,158,551		$	99,578,526
Billings in excess of costs and estimated earnings on uncompleted contracts		(74,657	)		(115,337	)
Totals	$	111,083,894		$	99,463,189