v3.26.3
Commitments and Contingencies - Quantitative information about operating leases (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Lease cost    
Operating lease cost $ 680 $ 641
Short-term lease cost 305 27
Variable lease cost 58 11
Sub-lease income   (109)
Total 1,043 570
Other information    
Right of use assets exchanged for new operating lease liabilities 967  
Operating cash flows from operating leases (790) (465)
U.K    
Lease cost    
Operating lease cost 494 483
Short-term lease cost 154 27
Variable lease cost 52  
Sub-lease income   (109)
Total 700 401
Other information    
Operating cash flows from operating leases $ (559) $ (303)
Weighted-average remaining lease term - operating leases 6 years 7 months 6 days 6 years 8 months 12 days
Weighted-average discount rate - operating leases 12.00% 12.00%
U.S    
Lease cost    
Operating lease cost $ 186 $ 158
Short-term lease cost 151  
Variable lease cost 6 11
Total 343 169
Other information    
Right of use assets exchanged for new operating lease liabilities 967  
Operating cash flows from operating leases $ (231) $ (162)
Weighted-average remaining lease term - operating leases 1 year 9 months 18 days 7 months 6 days
Weighted-average discount rate - operating leases 12.00% 12.00%