Share-based compensation - Narrative (Details) SFr in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2026
CHF (SFr)
shares
|
Jun. 30, 2025
CHF (SFr)
|
Jun. 30, 2026
CHF (SFr)
shares
|
Jun. 30, 2025
CHF (SFr)
|
Dec. 31, 2025
shares
|
|
| Disclosure Of Number And Weighted Average Exercise Prices Of Other Equity Instruments [Line Items] | |||||
| Share-based compensation | SFr | SFr 907 | SFr 1,228 | SFr 1,843 | SFr 2,370 | |
| Performance Share Units (PSU) | |||||
| Disclosure Of Number And Weighted Average Exercise Prices Of Other Equity Instruments [Line Items] | |||||
| Number of share-based awards outstanding (in shares) | 3,218,673 | 3,218,673 | 2,918,458 | ||
| Restricted Share Units (RSU) | |||||
| Disclosure Of Number And Weighted Average Exercise Prices Of Other Equity Instruments [Line Items] | |||||
| Number of share-based awards outstanding (in shares) | 586,723 | 586,723 | 504,543 | ||