Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Basis of Presentation
Cash, cash equivalents and marketable securities	$ 252,700				$ 252,700
Net loss	$ (30,502)	$ (29,361)	$ (36,004)	$ (23,050)	(59,863)	$ (59,054)
Net cash used in operations					$ (55,765)	$ (46,778)