Contract Assets and Contract Liabilities (Tables)

6 Months Ended

Jun. 30, 2020

Contract Assets and Contract Liabilities [Abstract]

Summary of costs and estimated earnings on uncompleted contracts

	2020			2019
Costs incurred on uncompleted contracts	$	622,745		$	513,558
Estimated earnings to date on uncompleted contracts		178,553			127,032
Gross contract assets		801,298			640,590
Less: billings to date		(938,319	)		(703,532	)
Net contract liabilities	$	(137,021	)	$	(62,942	)

Summary of costs included in condensed consolidated balance sheets

	2020			2019
Contract assets	$	11,830		$	106,015
Contract liabilities		(148,851	)		(168,957	)
Net contract liabilities	$	(137,021	)	$	(62,942	)