Annual report [Section 13 and 15(d), not S-K Item 405]

Leases - Additional Information (Details)

v3.26.1
Leases - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Feb. 24, 2024
Dec. 31, 2025
Dec. 31, 2024
Lessee, Lease, Description [Line Items]      
Right-of-use asset   $ 3,431 $ 6,315
Weighted average discount rate - operating leases   10.30% 11.00%
Fixed lease cost   $ 4,416 $ 4,293
Additional in fixed undiscounted lease payments   172  
Variable lease costs   171 296
Short-term lease cost   34 750
Total fixed operating lease cost   4,211 $ 3,247
Increase in the lease liability   787  
WuXi Agreement [Member]      
Lessee, Lease, Description [Line Items]      
Termination fees $ 1,080    
Work orders terms The terms of the August 2023 work orders included both fixed costs and contingent variable costs. The lease commenced October 1, 2023. In 2024, the Company remeasured the lease following the resolution of the contingency related to variable costs and an amendment to the 2023 work order, which extended the term of the agreement by an additional 18 months through August 2026. The Company may terminate the Dedicated Suite lease for convenience with six months’ prior written notice and up to a $1,080 termination fee if both the rese-cel and MuSK-CAART work orders are terminated    
Increase in the lease liability   14,934  
Lonza Agreement [Member]      
Lessee, Lease, Description [Line Items]      
Increase in the lease liability   $ 6,137