Restructuring Charges - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended			12 Months Ended
	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	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
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]						Research and development
Total consideration from disposal of long lived assets	$ 500		$ 500	$ 500
Loss on disposal of long-lived assets					$ 0	$ 915	$ 0
Lease asset impairment	900
Impairment on leasehold improvements	$ 1,700
Termination fee amount								$ 2,000
Restructuring costs outstanding and unpaid					$ 0	$ 1,100
Research and development expense
Restructuring Cost and Reserve [Line Items]
Loss on disposal of long-lived assets		$ 700		700
General and administrative
Restructuring Cost and Reserve [Line Items]
Loss on disposal of long-lived assets		$ 200		$ 200