Restructuring Charges - Narrative (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Apr. 30, 2023	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Aug. 07, 2023
Restructuring Cost and Reserve [Line Items]
Employee workforce, termination percentage		83.00%		83.00%
Cash severance payments and other employee-related costs			$ 0			$ 6,400,000
Non-cash stock-based compensation expense related to accelerated vesting of stock-based awards						1,000,000.0
Total consideration from disposal of long lived assets	$ 500,000			$ 500,000
Loss on disposal of long-lived assets					$ 0	$ 915,000
Lease asset impairment	900,000
Impairment on leasehold improvements	$ 1,700,000
Termination fee amount								$ 2,000,000.0
Restructuring costs outstanding and unpaid					$ 0		$ 1,100,000
Research and Development Expense
Restructuring Cost and Reserve [Line Items]
Loss on disposal of long-lived assets				700,000
General and administrative
Restructuring Cost and Reserve [Line Items]
Loss on disposal of long-lived assets				$ 200,000