Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 20, 2021	Aug. 31, 2022	Jul. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2018	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Feb. 28, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Common stock, shares authorized				800,000,000		800,000,000					800,000,000
Undesignated preferred stock authorized				80,000,000		80,000,000					80,000,000
Undesignated preferred stock par value				$ 0.0001		$ 0.0001					$ 0.0001
Common stock, shares issued				122,306,969		122,306,969					121,382,547
Common stock, shares outstanding				121,024,938		121,024,938					119,102,505
Share-based compensation, vesting rights description						The restricted stock vests 25% one year from the vesting commencement date and monthly thereafter over a three-year period and is subject to repurchase by the Company in the event of any voluntary or involuntary termination of services to the Company prior to vesting.
Shares of common stock subject to repurchase				0		0					212,674
Common Stock
Class of Stock [Line Items]
Convertible preferred stock converted into shares of common stock					71,263,685
Common stock, shares issued				122,306,969	121,250,375	122,306,969	121,250,375		122,063,473	121,732,846	121,382,547	27,300,123	26,129,283		25,189,673
IPO
Class of Stock [Line Items]
Common stock, shares authorized	800,000,000													156,000,000
Undesignated preferred stock authorized	80,000,000
Undesignated preferred stock par value	$ 0.0001
IPO | Common Stock
Class of Stock [Line Items]
Convertible preferred stock converted into shares of common stock	71,263,685		71,263,685
Restricted Stock
Class of Stock [Line Items]
Shares issued								1,458,332
Share price per share								$ 0.0001
Stock vesting period								3 years
Number of shares of common stock subject to repurchase vested in period				30,384	91,146	212,674	273,439
Restricted Stock | One Year from the Vesting Commencement Date and Monthly Thereafter Over Three-year Vesting Period
Class of Stock [Line Items]
Stock vesting percentage								25.00%
Share-based compensation, vesting rights description						The Company granted 1,795,827 shares of its restricted stock in 2018, which vest 25% one year from the vesting commencement date and monthly thereafter over a three-year period.
Jefferies LLC | Common Stock
Class of Stock [Line Items]
Number of stock sold						0
Jefferies LLC | Maximum | Common Stock
Class of Stock [Line Items]
Aggregate offering price		$ 200
Percentage of commission on gross sales proceeds		3.00%
Convertible Preferred Stock
Class of Stock [Line Items]
Preferred shares outstanding				0		0					0	85,516,454	85,516,454		69,584,682