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CONDENSED BALANCE SHEETS (Parenthetical) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
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) 11,010,587 8,593,633
Common stock, shares outstanding (in shares) 6,436,505 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) 0 0
Preferred stock, shares outstanding (in shares) 0 0