Condensed Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock Outstanding [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Dec. 31, 2024	4,635,568
Balance at Dec. 31, 2024	$ 4,636	$ 2,470,850	$ 9,209,030	$ (222,435)	$ 11,462,081
Stock compensation expense	$ 0	19,477	0	0	19,477
Issuance of common stock out of treasury (in shares)	3,955
Issuance of common stock out of treasury	$ 4	10,001	0	3,955	13,960
Cash dividends declared	0	0	(92,789)	0	(92,789)
Net income	$ 0	0	782,239	0	782,239
Balance (in shares) at Mar. 31, 2025	4,639,523
Balance at Mar. 31, 2025	$ 4,640	2,500,328	9,898,480	(218,480)	12,184,968
Balance (in shares) at Dec. 31, 2025	4,641,523
Balance at Dec. 31, 2025	$ 4,642	2,591,755	10,464,410	(216,343)	12,844,464
Stock compensation expense	$ 0	15,269	0	0	15,269
Issuance of common stock out of treasury (in shares)	1,364
Issuance of common stock out of treasury	$ 1	3,559	0	1,501	5,061
Cash dividends declared	0	0	(557,010)	0	(557,010)
Net income	$ 0	0	971,489	0	971,489
Balance (in shares) at Mar. 31, 2026	4,642,887
Balance at Mar. 31, 2026	$ 4,643	$ 2,610,583	$ 10,878,889	$ (214,842)	$ 13,279,273