BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Shareholders' equity:
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	1,648,657	1,614,817
Common stock, shares outstanding	1,648,657	1,614,817
Treasury shares	33,840	33,840
Series A Preferred Stock [Member]
Shareholders' equity:
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	4,438,578	3,784,712
Preferred stock, shares outstanding	4,438,578	3,784,712
Preferred stock, liquidation value	$ 13,808,610	$ 11,800,316