Quarterly report pursuant to Section 13 or 15(d)

Balance Sheets (Parenthetical)

v3.19.3
Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2019
Dec. 31, 2018
Balance Sheets    
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock authorized (in shares) 200,000,000 200,000,000
Common stock issued (in shares) 92,581,496 82,323,413
Common stock outstanding (in shares) 92,581,496 82,323,413
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock authorized (in shares) 5,000,000 5,000,000
Preferred stock issued (in shares) 0 0
Preferred stock outstanding (in shares) 0 0