v3.26.1
Shareholders’ Equity/(Deficit) (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 41 Months Ended
Feb. 19, 2026
USD ($)
$ / shares
shares
Jan. 13, 2025
USD ($)
day
shares
Aug. 18, 2023
$ / shares
shares
Aug. 16, 2023
$ / shares
shares
Oct. 08, 2021
USD ($)
Feb. 28, 2026
USD ($)
shares
Jan. 31, 2025
$ / shares
shares
Mar. 31, 2026
USD ($)
shares
Mar. 31, 2025
USD ($)
Feb. 27, 2025
USD ($)
shares
Jan. 31, 2025
£ / shares
shares
Feb. 29, 2024
Dec. 31, 2023
Jun. 30, 2023
USD ($)
shares
Class of Stock [Line Items]                            
Ordinary share conversion ratio (in shares)     1   1                  
Number of shares available for purchase, percent of principal amount of term loan (as a percent)                         0.025 0.025
Number of options exercisable (in shares)                           94,222
Fair value of exercisable options | $                           $ 700
PIPE Warrants                            
Class of Stock [Line Items]                            
Sale of stock, shares issued in transaction (in shares)               0            
PIPE warrants remain outstanding               12,324,700            
2025 ADS Warrants                            
Class of Stock [Line Items]                            
Proceeds from issuance of pre-funded warrants, net of issuance costs | $   $ 149,800                        
Issuance costs of warrant | $   $ 9,400                        
Issuance of February 2026 Offering of pre-funded warrants | $               $ 32,542            
Pre-funded Warrants                            
Class of Stock [Line Items]                            
PIPE warrants remain outstanding               23,848,829            
Proceeds from issuance of pre-funded warrants, net of issuance costs | $               $ 1 $ 0          
Issuance of February 2026 Offering of pre-funded warrants | $               $ 33,719            
Hercules Capital, Inc.                            
Class of Stock [Line Items]                            
Term (in years)                           10 years
Number of options exercisable (in shares)                           94,222
Fair value of exercisable options | $                           $ 700
At-The-Market Offering                            
Class of Stock [Line Items]                            
Sale of stock, shares issued in transaction (in shares)                   5,491,836        
Consideration received on transaction | $                   $ 54,800        
Private Placement                            
Class of Stock [Line Items]                            
Ordinary share conversion ratio (in shares)       1                    
Sale of stock, shares issued in transaction (in shares)     16,076,750 16,076,750                    
Warrant exercise price (in dollars per share) | $ / shares       $ 9.93                    
Sale of stock, price per share (in dollars per share) | $ / shares       $ 7.78                    
Private Placement | PIPE Warrants                            
Class of Stock [Line Items]                            
Term (in years)                       3 years    
Warrant exercise price (in dollars per share) | $ / shares     $ 9.93                      
Underwritten Offering                            
Class of Stock [Line Items]                            
Sale of stock, shares issued in transaction (in shares)           15,160,619                
Consideration received on transaction | $ $ 140,500                          
Underwritten Offering | 2025 ADS Warrants                            
Class of Stock [Line Items]                            
Ordinary share conversion ratio (in shares)   1         1              
Sale of stock, shares issued in transaction (in shares)   24,014,728         24,014,728              
Term (in years)             3 years       3 years      
Warrant exercise price (in dollars per share) | $ / shares             $ 5.7960              
Purchase of warrants (in shares)           19,898,829 24,014,728       24,014,728      
Threshold consecutive trading days | day   3                        
Proceeds from issuance and exercises of warrants | $           $ 203,200                
Sale of stock, price per share (in dollars per share) | (per share)             $ 4.2750       £ 0.008      
Underwritten Offering | Pre-funded Warrants                            
Class of Stock [Line Items]                            
Warrant exercise price (in dollars per share) | $ / shares             $ 0.0001              
Purchase of warrants (in shares) 1,250,000         19,898,829 11,044,720       11,044,720      
Warrants exercised (in shares)               6,000,000            
Sale of stock, price per share (in dollars per share) | $ / shares $ 7.9999           $ 4.2649              
Underwritten Offering | 2026 ADS Warrants                            
Class of Stock [Line Items]                            
Ordinary share conversion ratio (in shares) 1                          
Sale of stock, shares issued in transaction (in shares) 17,500,000                          
Sale of stock, price per share (in dollars per share) | $ / shares $ 8.00                          
American Depositary Shares | Initial Public Offering                            
Class of Stock [Line Items]                            
Amount authorized | $         $ 150,000                  
American Depositary Shares | At-The-Market Offering                            
Class of Stock [Line Items]                            
Amount authorized | $                   $ 150,000