Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Mar. 18, 2021	Nov. 26, 2019	Apr. 12, 2019	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2021	Nov. 29, 2019	Apr. 16, 2019
Subsequent Event [Line Items]
Stock issued (in shares)		3,666,667	5,670,000
Exercised (in shares)					33,846
Sale price (in dollars per share)		$ 12.00	$ 11.00
Proceeds from common stock issuance		$ 65,000	$ 85,800
Pre Funded Warrant
Subsequent Event [Line Items]
Convertible preferred stock exercise price (in dollars per share)		$ 11.999	$ 10.999				$ 11.999	$ 10.999
Class B Warrants
Subsequent Event [Line Items]
Convertible preferred stock exercise price (in dollars per share)		$ 15.00					$ 15.00
Co-Development Agreement | Private Placement
Subsequent Event [Line Items]
Sale of Stock, Consideration Received on Transaction				$ 2,000
Sale Of Stock, Consideration Expected To Be Received, Maximum				$ 5,500
Forecast
Subsequent Event [Line Items]
Limited partners' contributed capital						$ 65,000
Forecast | Co-Development Agreement
Subsequent Event [Line Items]
Limited partners' contributed capital						$ 65,000
Subsequent Event
Subsequent Event [Line Items]
Stock issued (in shares)	6,271,836
Sale price (in dollars per share)	$ 8.70
Proceeds from common stock issuance	$ 55,000
Convertible preferred stock exercise price (in dollars per share)	$ 8.70
Subsequent Event | Pre Funded Warrant
Subsequent Event [Line Items]
Exercised (in shares)	50,000
Exercisable (in dollars per share)	$ 8.69
Subsequent Event | Private Placement
Subsequent Event [Line Items]
Sale price (in dollars per share)	8.70
Subsequent Event | Private Placement | Pre Funded Warrant
Subsequent Event [Line Items]
Exercisable (in dollars per share)	$ 0.01