v3.25.4
Company information and operations - Additional Information (Details)
 1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2025
USD ($)
Dec. 31, 2025
SFr / shares
shares
Sep. 30, 2024
shares
Jun. 30, 2023
shares
Dec. 31, 2025
USD ($)
shares
Dec. 31, 2025
CHF (SFr)
SFr / shares
shares
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
shares
Dec. 31, 2025
$ / shares
shares
Dec. 31, 2022
shares
Disclosure Of Company Information And Operations [Line Items]                    
Aggregate offing price | $ $ 50,000,000.0       $ 1,107,000          
Number of shares sold under ATM program (in shares)         228,238 228,238        
Gross proceeds from shares sold under ATM program | $         $ 1,093,000   $ 0 [1] $ 0 [1]    
Ordinary Shares                    
Disclosure Of Company Information And Operations [Line Items]                    
Par value (in dollars per share) | (per share)   SFr 0.05       SFr 0.05     $ 0.06  
Number of conditional share capital available for financing (in shares)   18,277,363       18,277,363 21,599,082   18,277,363  
Number of conditional share capital available for employee participation (in shares)   21,383,247       21,383,247 18,061,528   21,383,247  
Minimum                    
Disclosure Of Company Information And Operations [Line Items]                    
Authorized increase in nominal share capital         4,192,193.63 SFr 3,319,908.2        
Maximum                    
Disclosure Of Company Information And Operations [Line Items]                    
Authorized increase in nominal share capital         $ 6,288,042.55 SFr 4,979,862.3        
Maximum | Ordinary Shares                    
Disclosure Of Company Information And Operations [Line Items]                    
Authorized increase in nominal share capital issuance (in shares)         33,199,082 33,199,082        
Par value (in dollars per share) | (per share)   SFr 0.05       SFr 0.05     $ 0.06  
Share capital                    
Disclosure Of Company Information And Operations [Line Items]                    
Number of shares issued (in shares)   89,321,220       89,321,220 79,321,220 76,898,164 89,321,220 66,398,164
Number of shares outstanding (in shares)   68,486,338       68,486,338 66,687,085   68,486,338  
Issuance of shares to be held as treasury shares (in shares)   10,000,000 2,423,056 10,500,000 10,000,000 10,000,000 2,423,056 10,500,000    
Treasury Share capital                    
Disclosure Of Company Information And Operations [Line Items]                    
Number of shares issued (in shares)   20,834,882       20,834,882 12,634,135 11,667,605 20,834,882 2,166,944
Issuance of shares to be held as treasury shares (in shares)         10,000,000 10,000,000 2,423,056 10,500,000    
Aggregate offing price | $         $ 14,000          
Number of shares sold under ATM program (in shares)         228,238 228,238        
[1] Refer to “Note 2—Material Accounting Policies—Statement of Cash Flows - Interest Classification” for details on change in accounting policy.