Contracts in Progress (Billings in Excess of Costs and Estimated Earnings) (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Contracts in Progress [Abstract]
Billings to date	$ 4,152,330	$ 4,208,409
Costs incurred on uncompleted contracts	657,505	1,122,453
Estimated earnings	390,390	380,547
Cost plus estimated earnings	1,047,895	1,503,000
Billings in excess of costs plus estimated earnings on uncompleted contracts	$ 3,104,435	$ 2,705,409