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Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 500,000,000 188,000,000
Common stock, shares issued 20,979,265 1,371,467
Common stock, shares outstanding 20,979,265 1,371,467
Convertible Preferred Stock    
Preferred stock, par value   $ 0.0001
Preferred stock, shares authorized   142,150,096
Preferred stock, shares issued 0 117,809,883
Preferred stock, shares outstanding 0 117,809,883
Preferred stock, aggregate liquidation value $ 0 $ 148,592