Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended
	Jul. 27, 2020	Jun. 30, 2020	Jun. 30, 2019	Jul. 30, 2020	Jul. 14, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Common stock, authorized		25,000,000				25,000,000
Share price		$ 31.60	$ 26.90
Net proceeds from sale of common stock		$ 21	$ 95
Payment of underwriting discounts and commissions and offering expenses		$ 1,462
Subsequent Event
Subsequent Event [Line Items]
Common stock, authorized					190,000,000
Common stock shares sold under IPO	1,786,739
Warrants to purchase common stock				2,534,239
Warrant exercise price per share				$ 30,000
Payments for repurchase of redeemable preferred stock in cash	$ 131,800
Subsequent Event | Convertible And Redeemable Series A-2 Preferred Stock
Subsequent Event [Line Items]
Share price	$ 15.00
Warrants to purchase common stock	1,999,999
Increase of shares	648,039
Subsequent Event | IPO
Subsequent Event [Line Items]
Common stock shares sold under IPO	11,500,000
Share price	$ 15.00
Net proceeds from sale of common stock	$ 161,300
Payment of underwriting discounts and commissions and offering expenses	$ 9,800
Subsequent Event | Underwriters
Subsequent Event [Line Items]
Common stock shares sold under IPO	1,500,000