Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Total	Common Stock	Accumulated Deficit [Member]
Balance, shares at Dec. 31, 2019		22,215,512
Balance, amount at Dec. 31, 2019	$ 7,833,788	$ 24,858,311	$ (17,024,523)
Net income for six months ended June 30, 2020	440,700		440,700
Unamortized loan origination cost attributable to the 500,000 notes converted to 1,000,000 shares	(116,400)	(116,400)
Amortization of value of employee stock options	10,624	$ 10,624
Balance, shares at Jun. 30, 2020		22,215,512
Balance, amount at Jun. 30, 2020	8,168,712	$ 24,752,535	(15,583,823)
Balance, shares at Mar. 31, 2020		22,215,512
Balance, amount at Mar. 31, 2020	7,467,660	$ 24,747,223	(17,279,563)
Net income for six months ended June 30, 2020	695,740		695,740
Amortization of value of employee stock options	5,312	$ 5,312
Balance, shares at Jun. 30, 2020		22,215,512
Balance, amount at Jun. 30, 2020	8,168,712	$ 24,752,535	(15,583,823)
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, 2020	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, 2020	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)