CONDENSED BALANCE SHEETS (Parenthetical) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Preferred stock, par value (in USD per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, par value (in USD per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	5,441,390	3,831,880
Common stock, shares outstanding (in shares)	5,441,390	3,831,880
Series A Convertible Preferred Stock
Preferred stock, shares authorized (in shares)	277,100	277,100
Preferred stock, shares outstanding (in shares)	60,600	60,600
Series A Convertible Preferred Stock, liquidation preference (in dollars)	$ 606,000	$ 606,000
Series C Convertible Preferred Stock
Preferred stock, shares authorized (in shares)	200,000	0
Preferred stock, shares outstanding (in shares)	0	0