Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Commitments and Contingencies [Line Items]
Terms agreement description	Under the August 2023 work orders, WuXi converted the Company’s non-dedicated suite to a dedicated suite for GMP manufacturing for the Company’s CABA-201 and MuSK-CAART programs, or the Dedicated Suite, for an initial term of 18 months with two 18-month extensions at the Company’s sole option on six months' notice prior to the end of the term.
Research and development expense	$ 55,424	$ 39,300
CABA-201 and MuSK-CAART [Member]
Commitments and Contingencies [Line Items]
Early termination fee	$ 1,080
Wuxi Agreement
Commitments and Contingencies [Line Items]
Lease expiration month	18 months
Early termination fee	$ 1,500