Nature of the Business (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Accumulated deficit	$ 316,365				$ 316,365		$ 278,492
Net loss	$ 22,109	$ 15,764	$ 175	$ 7,484	$ 37,873	$ 7,659