v3.21.2
Condensed Balance Sheets (Unaudited) (Parenthetical) - $ / shares
shares in Thousands
Sep. 30, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, authorized 2,500 2,500
Preferred stock, issued 0 0
Preferred stock, outstanding 0 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, authorized 47,500 47,500
Common stock, issued 23,145 22,375
Common stock, oustanding 23,145 22,375