Description of Business, Organization and Liquidity - Additional Information (Details) $ / shares in Units, $ in Thousands					2 Months Ended	3 Months Ended		9 Months Ended
	Jul. 02, 2021 $ / shares shares	Jun. 29, 2021 $ / shares shares	Jun. 28, 2021 shares	Jun. 21, 2021	Jul. 31, 2021 USD ($)	Sep. 30, 2021 USD ($) shares	Jun. 30, 2021 shares	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Description Of Business Organization And Liquidity Disclosure [Line Items]
Proceeds from issuance of initial public offering, net of issuance costs								$ 251,323
IPO closed date								Jun. 29, 2021
Accumulated deficit						$ 122,421		$ 122,421	$ 70,591
Existing cash and restricted cash						394,953		394,953	$ 19,817	$ 10,579	$ 6
Cash balance in connection with IPO						$ 33,100		$ 33,100
Common Stock
Description Of Business Organization And Liquidity Disclosure [Line Items]
Reverse stock split, description								On June 18, 2021, the Company’s board of directors approved an amendment to the Company’s amended and restated certificate of incorporation to effect a reverse stock split of the Company’s issued and outstanding common stock at a 1 for 2.432 ratio, which was effected on June 21, 2021.
Stock split, conversion ratio				0.411184211
Conversion of stock | shares			30,761,676
Common Stock | Initial Public Offering
Description Of Business Organization And Liquidity Disclosure [Line Items]
Issuance of common stock, Shares | shares	2,100,000	14,000,000				2,100,000	14,000,000
Public offering price per share | $ / shares	$ 17.00	$ 17.00
Proceeds from issuance of initial public offering, net of issuance costs					$ 251,300
Underwriting discounts and commissions					19,100
Offering costs					$ 3,200
Conversion of stock | shares			30,761,676
Common Stock | Underwriters
Description Of Business Organization And Liquidity Disclosure [Line Items]
Issuance of common stock, Shares | shares	2,100,000	2,100,000