Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Basis of Presentation
Cash and cash equivalents	$ 89,961						$ 89,961		$ 193,725
Accumulated deficit	(568,342)						(568,342)		$ (411,545)
Net loss	$ (50,486)	$ (53,515)	$ (52,796)	$ (41,805)	$ (37,672)	$ (31,472)	(156,797)	$ (110,949)
Net cash used in operating activities							$ (128,143)	$ (96,702)