Quarterly report pursuant to Section 13 or 15(d)

BALANCE SHEETS (Parenthetical)

v3.19.2
BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2019
Dec. 31, 2018
Mar. 12, 2018
BALANCE SHEETS      
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 0 0  
Preferred stock, shares outstanding (in shares) 0 0  
Common stock, par value $ 0.001 $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 50,000,000 50,000,000 50,000,000
Common stock, shares issued (in shares) 15,687,546 15,663,221  
Common stock, shares outstanding (in shares) 15,687,546 15,663,221