Quarterly report pursuant to Section 13 or 15(d)

BALANCE SHEETS (Unaudited) (Parenthetical)

v3.19.2
BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares
Jun. 30, 2019
Dec. 31, 2018
Statement Of Financial Position [Abstract]    
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 275,000,000 275,000,000
Common stock, shares issued 32,918,599 32,664,429
Common stock, shares outstanding 32,859,700 32,648,893
Treasury stock, shares 58,899 58,899