Uncompleted Contracts (Tables)

12 Months Ended

Dec. 31, 2019

Costs, estimated earnings and billings on uncompleted contracts are as follows:

	December 31,			December 31,
	2019			2018

Revenue Recognized	$	1,074,800		$	499,600
Less: Billings to date		(832,300	)		(185,300	)
Costs and estimated earnings in excess of billings on uncompleted contracts		242,500			314,300

Billings to date		2,707,200			1,642,600
Revenue recognized		(2,322,900	)		(1,172,400	)

Revenue contract liabilities	$	384,300		$	470,200