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Stockholders' Equity (Details) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended	9 Months Ended
	Dec. 16, 2020 USD ($) $ / shares shares	Mar. 02, 2020 $ / shares shares	Mar. 31, 2021 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) $ / shares	Sep. 30, 2021 USD ($) option $ / shares shares	Sep. 30, 2020 USD ($)	Dec. 31, 2020 $ / shares shares
Class of Stock [Line Items]
Shares authorized (in shares)	635,000,000				635,000,000
Common stock, shares authorized (in shares)					625,000,000		625,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001				$ 0.0001		$ 0.0001
Preferred stock, shares authorized (in shares)	10,000,000				10,000,000		10,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.0001				$ 0.0001		$ 0.0001
Number of shares issued (in shares)	15,853,052	69,000,000			10,033,333
Aggregate consideration | $	$ 158,500		$ 408,000
Issuance costs | $			$ 5,900	$ 6,800	$ 13,221	$ 653
Stock sold, price per share (in dollars per share) | $ / shares	$ 10.00	$ 10.00	$ 23.34	$ 23.34
Underwritten Public Offering
Class of Stock [Line Items]
Number of shares issued (in shares)			17,000,000
Number of shares available at election (in shares)			19,800,000
Over-Allotment Option
Class of Stock [Line Items]
Number of shares available at election (in shares)			4,800,000
Class A common stock, par value $0.0001 per share
Class of Stock [Line Items]
Common stock, votes per share | option					1,000,000
Common stock, shares authorized (in shares)	500,000,000				500,000,000		500,000,000
Class B Common Stock
Class of Stock [Line Items]
Common stock, votes per share | option					20,000,000
Common stock, shares authorized (in shares)	125,000,000				125,000,000		125,000,000
Common stock, par value (in dollars per share) | $ / shares					$ 0.0001

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