Subsequent Events - Additional Information (Details) $ / shares in Units, $ in Millions		1 Months Ended		9 Months Ended
	Oct. 20, 2020	Nov. 30, 2020 shares	Oct. 31, 2020 USD ($) $ / shares shares	Sep. 30, 2020 $ / shares shares	Nov. 02, 2020 shares	Nov. 01, 2020 shares	Dec. 31, 2019 shares
Subsequent Event [Line Items]
Stock split description				The Company’s board of directors and shareholders approved a 2.59970-for-1 stock split of its issued and outstanding common stock and a proportional adjustment to the existing conversion ratios for its preferred stock effective as of October 20, 2020.
Common stock, outstanding				259,966			259,966
Common stock, authorized				300,000,000			5,350,404
Number of options, granted				1,258,104
Weighted average exercise price per share, Granted | $ / shares				$ 1.95
Subsequent Event
Subsequent Event [Line Items]
Stock split ratio	2.59970
Number of shares of common stock issued		675,540	675,540
Common stock, authorized					300,000,000
Preferred stock, shares authorized					10,000,000
Subsequent Event | IPO
Subsequent Event [Line Items]
Number of shares of common stock issued			6,342,207
Shares issued,price per share | $ / shares			$ 15.00
Net proceeds from IPO | $			$ 85.7
Common stock, outstanding					24,585,276
Subsequent Event | IPO | Common Stock | Series B, Series C and Series D Convertible Preferred Stock
Subsequent Event [Line Items]
Convertible preferred stock, shares issued upon conversion						18,658,643
Subsequent Event | 2020 Plan
Subsequent Event [Line Items]
Number of shares of common stock reserved for issuance			1,685,861
Shares issued, percentage of common stock outstanding			5.00%
Subsequent Event | 2020 Plan | New Options | Board Of Directors | Employees, Directors and Consultants
Subsequent Event [Line Items]
Number of options, granted			950,181
Weighted average exercise price per share, Granted | $ / shares			$ 7.70