Contracts in Process (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Contracts in Process (Details)
Costs on uncompleted contracts	$ 689,237	$ 441,589
Estimated earnings	226,669	217,499
Total	915,906	659,088
Less: Progress billings	1,492,306	856,734
Contract liabilities, net	$ (576,400)	$ (197,646)