Description of Business and Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Thousands				1 Months Ended	3 Months Ended	9 Months Ended
	Aug. 06, 2021 USD ($) $ / shares shares	Jun. 16, 2020 USD ($) $ / shares shares	Jun. 04, 2020	Jun. 30, 2020 shares	Jun. 30, 2020 shares	Sep. 30, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares
Description Of Business And Basis Of Presentation [Line Items]
Common stock, shares authorized		400,000,000				400,000,000	400,000,000
Preferred stock, shares authorized		40,000,000				40,000,000	40,000,000
Reverse stock split, description						On June 4, 2020, the Company effected a one-for-2.1095 reverse stock split of its common stock (the Reverse Stock Split).
Stockholders' equity note, stock split, conversion ratio			2.1095
Accumulated deficit | $						$ 146,011	$ 66,540
Cash, cash equivalents and marketable securities | $						$ 413,000
Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Outstanding shares of convertible preferred stock converted into common stock					17,921,000
Initial Public Offering
Description Of Business And Basis Of Presentation [Line Items]
Sale of stock number of shares issued in transaction		16,560,000
Sale of stock, price per share | $ / shares		$ 18.00
Proceeds from the IPO, net of underwriting discounts, commissions and offering costs | $		$ 274,100
Outstanding shares of convertible preferred stock converted into common stock		17,921,069
Initial Public Offering | Undesignated Preferred Stock
Description Of Business And Basis Of Presentation [Line Items]
Preferred stock, shares authorized		40,000,000
Initial Public Offering | Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Outstanding shares of convertible preferred stock converted into common stock				17,921,069
Warrant to purchase of common stock		7,809
Common stock, shares authorized		400,000,000
Follow-on Public Offering | Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Sale of stock number of shares issued in transaction	9,200,000
Sale of stock, price per share | $ / shares	$ 18.00
Proceeds from the follow-on public offering, net of underwriting discounts, commissions and offering costs | $	$ 155,100