Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Total	Common Stock	Accumulated Deficit [Member]
Balance, shares at Dec. 31, 2020		22,215,512
Balance, amount at Dec. 31, 2020	$ 2,356,978	$ 24,763,447	$ (22,406,469)
Net income for six months ended June 30, 2021	912,573		912,573
Amortization of value of employee stock options	12,737	$ 12,737
Balance, shares at Jun. 30, 2021		22,215,512
Balance, amount at Jun. 30, 2021	3,282,288	$ 24,776,184	(21,493,896)
Balance, shares at Mar. 31, 2021		22,215,512
Balance, amount at Mar. 31, 2021	3,190,755	$ 24,769,816	(21,579,061)
Net income for six months ended June 30, 2021	85,165		85,165
Amortization of value of employee stock options	6,368	$ 6,368
Balance, shares at Jun. 30, 2021		22,215,512
Balance, amount at Jun. 30, 2021	3,282,288	$ 24,776,184	(21,493,896)
Balance, shares at Dec. 31, 2021		22,215,512
Balance, amount at Dec. 31, 2021	2,894,564	$ 24,791,568	(21,897,004)
Net income for six months ended June 30, 2021	(186,957)		(186,957)
Amortization of value of employee stock options	16,111	$ 16,111
Balance, shares at Jun. 30, 2022		22,215,512
Balance, amount at Jun. 30, 2022	2,723,718	$ 24,807,679	22,083,961
Balance, amount at Jun. 30, 2022	2,723,718	$ 24,807,679	(22,083,961)
Balance, shares at Mar. 31, 2022		22,215,512
Balance, amount at Mar. 31, 2022	2,765,491	$ 24,799,191	(22,033,700)
Net income for six months ended June 30, 2021	(50,261)		(50,261)
Amortization of value of employee stock options	8,488	$ 8,488
Balance, shares at Jun. 30, 2022		22,215,512
Balance, amount at Jun. 30, 2022	2,723,718	$ 24,807,679	22,083,961
Balance, amount at Jun. 30, 2022	$ 2,723,718	$ 24,807,679	$ (22,083,961)