v3.25.4
Right-of-use assets, long-term financial assets and lease liabilities (Details) - CHF (SFr)
SFr in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Right-of-use of leased assets:    
Balance, beginning of period SFr 5,437 SFr 3,508
Additions 213 2,606
Depreciation (1,110) (677)
Balance, end of period SFr 4,540 SFr 5,437
Buildings    
Right-of-use assets and lease liabilities:    
Weighted average incremental borrowing rate 5.50% 3.50%
Right-of-use of leased assets:    
Balance, beginning of period SFr 5,320 SFr 3,446
Additions 213 2,516
Depreciation (1,064) (642)
Balance, end of period SFr 4,469 SFr 5,320
Office Equipment    
Right-of-use assets and lease liabilities:    
Weighted average incremental borrowing rate 3.30% 3.30%
Right-of-use of leased assets:    
Balance, beginning of period SFr 91 SFr 50
Additions 0 64
Depreciation (40) (23)
Balance, end of period SFr 51 SFr 91
IT Equipment    
Right-of-use assets and lease liabilities:    
Weighted average incremental borrowing rate 7.20% 7.20%
Right-of-use of leased assets:    
Balance, beginning of period SFr 26 SFr 12
Additions 0 26
Depreciation (6) (12)
Balance, end of period SFr 20 SFr 26