STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2017	$ 107,224	$ 29,559,784	$ (26,084,700)	$ 3,582,308
Balance (in shares) at Dec. 31, 2017	10,722,401
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 0	0	(179,332)	(179,332)
Cash dividend paid	0	0	(536,120)	(536,120)
Stock-based compensation	0	90,976	0	90,976
Balance at Dec. 31, 2018	$ 107,224	29,650,760	(26,800,152)	$ 2,957,832
Balance (in shares) at Dec. 31, 2018	10,722,401			10,722,401
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 0	0	217,594	$ 217,594
Cash dividend paid	0	0	(536,120)	(536,120)
Stock-based compensation	0	54,913	0	54,913
Balance at Dec. 31, 2019	$ 107,224	$ 29,705,673	$ (27,118,678)	$ 2,694,219
Balance (in shares) at Dec. 31, 2019	10,722,401			10,722,401