CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Shareholders' equity:
Preferred Stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	3,690,648	3,724,547
Preferred stock, shares outstanding	3,690,648	3,724,547
Liquidation value	$ 11,205,591	$ 11,301,999
Common stock, par value (in dollars per share)	$ .001	$ .001
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	1,648,657	1,648,657
Common stock, shares outstanding	1,629,214	1,634,122