Contract Assets and Contract Liabilities (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Costs and estimated earnings on uncompleted contracts
Costs incurred on uncompleted contracts	$ 4,272,425	$ 4,572,581
Provision for loss on uncompleted contracts	2,238,578
Estimated earnings (losses) to date on uncompleted contracts	(3,156,377)	872,302
Gross contract assets	3,354,626	5,444,883
Less: billings to date	(4,750,289)	(5,916,487)
Net contract liabilities	$ 1,395,663	$ 471,604