Contract Assets and Contract Liabilities (Tables)

9 Months Ended

Sep. 30, 2019

Contract Assets and Contract Liabilities [Abstract]

Schedule of costs and estimated earnings on uncompleted contracts

	September 30,  2019			December 31, 2018
Costs incurred on uncompleted contracts	$	228,461		$	11,307,975
Estimated earnings to date on uncompleted contracts		79,852			838,615
Gross contract assets		308,313			12,146,590
Less: billings to date		(540,715	)		(13,221,152	)
Net contract assets (liabilities)	$	(232,402	)	$	(1,074,562	)

Schedule of costs included in condensed consolidated balance sheets

	September 30,  2019			December 31, 2018
Costs and estimated earnings in excess of billings on uncompleted contracts	$	8,689		$	260,325
Billings in excess of costs and estimated earnings on uncompleted contracts		(241,091	)		(1,334,887	)
Net contract assets (liabilities)	$	(232,402	)	$	(1,074,562	)