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Leases - Additional Information (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Feb. 24, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Lessee, Lease, Description [Line Items] |  |  |
Right-of-use asset |  | $ 6,315 | $ 4,910
Weighted average discount rate - operating leases |  | 11.00% | 9.50%
Fixed lease cost |  | $ 4,293 | $ 3,259
Additional in fixed undiscounted lease payments |  | 626 |
Variable lease costs |  | 296 | 65
Short-term lease cost |  | 750 | 717
Total fixed operating lease cost |  | 3,247 | $ 2,477
Increase in the ROU asset |  | 4,242 |
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 due to resolution of the contingency related to variable costs and an amendment to the 2023 work order to extend the term of the agreement for an additional 18 months through August 2026 resulting in an increase in the right-of-use asset and lease liability of $10,963. 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 |  | 10,963 |
Lonza Agreement [Member] |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Fixed lease cost |  | $ 16,000 |

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