Retirement benefit plan - Change in Net Defined Benefit Liability (Details) - CHF (SFr) SFr in Thousands |
12 Months Ended | ||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Change in net defined benefit liability [Abstract] | |||
| Net defined benefit liabilities, beginning of period | SFr 8,844 | SFr 5,770 | SFr 3,213 |
| Net pension cost through statement of income/(loss) | 301 | 1,794 | 2,455 |
| Remeasurement through other comprehensive income/(loss) | 1,353 | 3,084 | 1,669 |
| Employer's contribution | (1,853) | (1,804) | (1,567) |
| Net defined benefit liabilities, end of period | SFr 8,645 | SFr 8,844 | SFr 5,770 |
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- References No definition available.
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- Definition The decrease (increase) in net defined benefit liability (asset) resulting from contributions to a defined benefit plan by the employer. [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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