Restructuring Charges - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Aug. 31, 2023
Restructuring Cost and Reserve [Line Items]
Employee workforce, termination percentage		83.00%
Cash severance payments and other employee-related costs				$ 6,400
Cash payments for employee related restructuring charges				5,300
Non-cash stock-based compensation expense related to accelerated vesting of stock-based awards				1,000
Total consideration from disposal of long lived assets	$ 500	$ 500	$ 500
Loss on disposal of long-lived assets				$ 915	$ 0	$ 0
Lease asset impairment	900
Impairment on leasehold improvements	$ 1,700
Termination fee amount							$ 2,000
Research and development
Restructuring Cost and Reserve [Line Items]
Loss on disposal of long-lived assets			700
General and administrative
Restructuring Cost and Reserve [Line Items]
Loss on disposal of long-lived assets			$ 200