Organization and Basis of Presentation (Details) $ / shares in Units, $ in Millions	1 Months Ended
	Sep. 30, 2019 USD ($) $ / shares shares
Class A common stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	31,381,152
Series D, Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	(31,381,152)
Series A, Series B, And Series C, Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	(134,276,690)
Class B common stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	134,276,690
Initial Public Offering | Class A common stock
Class of Stock [Line Items]
Shares issued in initial public offering (in shares)	40,250,000
Aggregate proceeds received from initial public offering, net of underwriters' discounts and commissions | $	$ 565.0
Underwriters' Option | Class A common stock
Class of Stock [Line Items]
Shares issued in initial public offering (in shares)	5,250,000
Price per share in initial public offering (in dollars per share) | $ / shares	$ 15.00
Former Employees | Class A common stock | Conversion of Class B Common Stock To Class A Common Stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	15,198,587
Former Employees | Class B common stock | Conversion of Class B Common Stock To Class A Common Stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	15,198,587