Statements of Shareholders' Equity - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2017		35,561,775
Balance at Dec. 31, 2017		$ 355,619	$ 10,087,843	$ (8,423,577)	$ 2,019,885
Stock compensation			18,221		$ 18,221
Exercise of stock options (in shares)		7,000			7,000
Exercise of stock options		$ 70	280		$ 350
Net income				329,210	$ 329,210
Exercise of stock options (in shares)		7,000			7,000
Exercise of stock options		$ 70	280		$ 350
Balance (in shares) at Dec. 31, 2018		35,568,775
Balance at Dec. 31, 2018		$ 355,689	10,106,344	(8,094,367)	2,367,666
Stock compensation			18,876		$ 18,876
Exercise of stock options (in shares)		20,000			20,000
Exercise of stock options		$ 200	3,800		$ 4,000
Net income				30,532	$ 30,532
Exercise of stock options (in shares)		20,000			20,000
Exercise of stock options		$ 200	3,800		$ 4,000
Balance (in shares) at Dec. 31, 2019		35,588,775
Balance at Dec. 31, 2019		$ 355,889	$ 10,129,020	$ (8,063,835)	$ 2,421,074