Contracts in Progress (Billings in Excess of Costs and Estimated Earnings) (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Contracts in Progress [Abstract]
Billings to date	$ 2,214,317	$ 2,131,579
Costs incurred on uncompleted contracts	1,241,722	1,208,444
Estimated earnings	769,728	483,046
Cost plus estimated earnings	2,011,450	1,691,490
Billings in excess of costs plus estimated earnings on uncompleted contracts	$ 202,867	$ 440,089