Statements of Changes in Stockholders' Equity (Unaudited) - 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, 2020		$ 778	$ 13,893,660		$ (2,235,852)	$ 11,658,586
Beginning balance, shares at Dec. 31, 2020		7,745,030
Stock options exercised			3,620			3,620
Stock options exercised, shares		2,500
Net income					655,163	655,163
Ending balance, value at Mar. 31, 2021		$ 778	13,897,280		(1,580,689)	12,317,369
Ending balance, shares at Mar. 31, 2021		7,747,530
Beginning balance, value at Dec. 31, 2021		$ 1,081	30,923,391		304,237	31,228,709
Beginning balance, shares at Dec. 31, 2021		10,807,130
Stock options exercised			7,975			7,975
Stock options exercised, shares		2,500
Stock reserved for future services			26,250			26,250
Net income					577,074	577,074
Ending balance, value at Mar. 31, 2022		$ 1,081	$ 30,957,616		$ 881,311	$ 31,840,008
Ending balance, shares at Mar. 31, 2022		10,809,630