Balance Sheets (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	0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	300,000,000	181,000,000
Common stock, shares issued	35,552,795	1,846,024
Common stock, shares outstanding	35,552,795	1,846,024
Series A Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock, par value	$ 0.0001	$ 0.0001
Redeemable convertible preferred stock, shares authorized	0	56,000,000
Redeemable convertible preferred stock, shares issued	0	56,000,000
Redeemable convertible preferred stock, shares outstanding	0	56,000,000
Redeemable convertible preferred stock. aggregate liquidation preference	$ 0	$ 62,468
Series B Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock, par value	$ 0.0001	$ 0.0001
Redeemable convertible preferred stock, shares authorized	0	49,501,221
Redeemable convertible preferred stock, shares issued	0	49,501,221
Redeemable convertible preferred stock, shares outstanding	0	49,501,221
Redeemable convertible preferred stock. aggregate liquidation preference	$ 0	$ 75,860
Series C Redeemable Convertible Preferred Stock
Redeemable convertible preferred stock, par value	$ 0.0001	$ 0.0001
Redeemable convertible preferred stock, shares authorized	0	44,000,000
Redeemable convertible preferred stock, shares issued	0	26,360,745
Redeemable convertible preferred stock, shares outstanding	0	26,360,745
Redeemable convertible preferred stock. aggregate liquidation preference	$ 0	$ 47,947