Related Party Transactions (Additional Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Sublease income			$ 1,538	$ 1,240
General and administrative	$ 8,188	$ 8,034	16,513	22,181
Prepaid expenses and other current assets	4,265		4,265				$ 5,989
Oxford Biomedica [Member]
Related Party Transaction [Line Items]
Sublease income	800	900	1,500	1,200
Expenses recognized under the transitional services	(100)	(200)	(300)	(200)
Amount due to OXB Solutions	300		300				500
General and administrative	100	1,400	500	2,000
Prepaid expenses and other current assets	100		100				300
Oxford Biomedica [Member] | Vendor [Member]
Related Party Transaction [Line Items]
Receivables from affiliates	100		100				1,100
Transitional Services Agreement [Member] | Oxford Biomedica [Member]
Related Party Transaction [Line Items]
Amount due to OXB Solutions	400		$ 400				100
Supply Agreement [Member] | Oxford Biomedica [Member]
Related Party Transaction [Line Items]
Clinical supply requirements			50.00%
Purchases of drug substance	8,300	1,500	$ 13,200	1,500
Amount due to OXB Solutions	10,200		10,200				$ 5,200
Supply Agreement [Member] | Oxford Biomedica [Member] | Forecast [Member]
Related Party Transaction [Line Items]
Purchase Commitment Amount					$ 0	$ 29,700
Supply Agreement [Member] | Oxford Biomedica [Member] | Process Development Services [Member]
Related Party Transaction [Line Items]
Recorded purchases	1,500	$ 6,900	2,700	$ 8,000
Supply Agreement [Member] | Oxford Biomedica [Member] | Stability and Other Support [Member]
Related Party Transaction [Line Items]
Recorded purchases	$ 400		$ 700