v3.26.1
Commitments and Contingencies - Quantitative information about operating leases (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Lease cost    
Operating lease cost $ 857 $ 871
Short-term lease cost 517 52
Variable lease cost 194 24
Sub-lease income (118) (145)
Total 1,450 802
Other information    
Right of use assets exchanged for new operating lease liabilities   364
Operating cash flows from operating leases (884) (870)
U.K    
Lease cost    
Operating lease cost 646 627
Short-term lease cost 230 52
Variable lease cost 183  
Sub-lease income (118) (145)
Total 941 534
Other information    
Operating cash flows from operating leases $ (651) $ (665)
Weighted-average remaining lease term - operating leases 6 years 6 months 7 years
Weighted-average discount rate - operating leases 12.00% 12.00%
U.S    
Lease cost    
Operating lease cost $ 211 $ 244
Short-term lease cost 287  
Variable lease cost 11 24
Total 509 268
Other information    
Right of use assets exchanged for new operating lease liabilities   364
Operating cash flows from operating leases $ (233) $ (205)
Weighted-average remaining lease term - operating leases 8 months 12 days 1 year 3 months 18 days
Weighted-average discount rate - operating leases 12.00% 12.00%