Statements of Changes in Stockholders' Equity - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2019		$ 775	$ 13,894,680		$ (3,714,255)	$ 10,181,200
Beginning balance, shares at Dec. 31, 2019		7,745,030
Stock options exercised		$ 3	30,163			30,166
Stock options exercised, shares		30,000
Stock options repurchased			(31,183)			(31,183)
Net income					1,478,403	1,478,403
Ending balance, value at Dec. 31, 2020		$ 778	13,893,660		(2,235,852)	11,658,586
Ending balance, shares at Dec. 31, 2020		7,775,030
Stock options exercised			11,320			11,320
Stock options exercised, shares		7,500
Net income					2,540,089	2,540,089
Stock issued for cash in offering, net		$ 300	16,794,700			16,795,000
Stock issued for cash in offering, net, shares		3,000,000
Stock issued for services		$ 3	171,213			223,716
Stock issued for services, shares		24,600
Stock reserved for future services			52,498			52,498
Ending balance, value at Dec. 31, 2021		$ 1,081	$ 30,923,391		$ 304,237	$ 31,228,709
Ending balance, shares at Dec. 31, 2021		10,807,130