Nature of the Business - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Aug. 03, 2020	Dec. 31, 2020	Dec. 31, 2019	Aug. 04, 2020
Net proceeds from issuance initial public offering	$ 292,000	$ 295,449
Preferred stock, shares outstanding			59,398,350
Net losses attributable to common stockholders		(69,784)	$ (23,839)
Accumulated deficit		(125,103)	(55,319)
Cash and cash equivalents		122,661	61,084
Short-term investments		$ 233,663	$ 64,993
Convertible Preferred Stock
Preferred stock, shares outstanding				0
Common Stock
Common stock issued and sold		18,687,500
Stock issued upon conversion of preferred stock		39,859,139
IPO
Common stock issued and sold	18,687,500
Public offering price per share	$ 17.00
Gross proceeds from issuance of common stock	$ 317,700
Stock issued upon conversion of preferred stock	39,859,139
IPO | Common Stock
Stock issued upon conversion of preferred stock	39,859,139