Preferred Stock - Additional Information (Details)		12 Months Ended		64 Months Ended
	Jul. 05, 2019 USD ($)	Dec. 31, 2020 Director $ / shares shares	Dec. 31, 2019 $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Jul. 22, 2019 shares	Dec. 31, 2018 shares	Aug. 31, 2018 $ / shares shares	Apr. 30, 2017 $ / shares shares	Jul. 31, 2016 $ / shares shares
Temporary Equity [Line Items]
Convertible preferred stock, terms of conversion		On the date of issuance, the estimated fair value of common stock into which the Preferred Stock was convertible was less than the effective conversion price of the Preferred Stock, and as such, there was no beneficial conversion feature at the commitment dates.
Gross proceeds threshold of automatic conversion of preferred stock to common stock | $	$ 45,000,000.0
Preferred stock, shares authorized | shares		5,000,000	5,000,000	5,000,000	5,000,000
Preferred stock, shares issued | shares		0	0	0
Preferred stock, shares outstanding | shares		0	0	0
Preferred stock, par value | $ / shares		$ 0.001	$ 0.001	$ 0.001
Common stock dividends declared | $				$ 0
Minimum percentage of outstanding shares of preferred stock for liquidation preference		65.00%
IPO | Common Stock
Temporary Equity [Line Items]
Number of preferred stock converted into common stock | shares					16,071,418
Series A Convertible Preferred Stock
Temporary Equity [Line Items]
Convertible preferred stock, share issued | shares								5,000,000	55,000,000
Convertible preferred stock, share price | $ / shares								$ 1.00	$ 1.00
Convertible preferred stock, share outstanding | shares						60,000,000
Series B Convertible Preferred Stock
Temporary Equity [Line Items]
Number of directors stockholders are entitled to elect | Director		1
Preferred stock, par value | $ / shares		$ 2.00		$ 2.00
Preferred stock conversion price per share | $ / shares		$ 14.00		14.00
Minimum percentage of shareholders vote or written consent required for automatic conversion		65.00%
Preferred stock, dividend per share | $ / shares		$ 0.16
Series B Convertible Preferred Stock | Series B Stock Purchase Agreement
Temporary Equity [Line Items]
Convertible preferred stock, share issued | shares							40,000,000
Convertible preferred stock, share price | $ / shares							$ 2.00
Issuance of convertible preferred stock, Shares | shares			12,500,000
Convertible Preferred Stock
Temporary Equity [Line Items]
Convertible preferred stock, share outstanding | shares					112,500,000
Series A Preferred Stock
Temporary Equity [Line Items]
Number of directors stockholders are entitled to elect | Director		1
Preferred stock, par value | $ / shares		$ 1.00		1.00
Preferred stock conversion price per share | $ / shares		$ 7.00		$ 7.00
Minimum percentage of shareholders vote or written consent required for automatic conversion		65.00%
Preferred stock, dividend per share | $ / shares		$ 0.08