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Right-of-use assets, long-term financial assets and lease liabilities - Contractual undiscounted cash flows for lease obligations (Details) - CHF (SFr) SFr in Thousands | Jun. 30, 2026 | Dec. 31, 2025
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Contractual undiscounted cash flows for lease liabilities: |  |
Contractual undiscounted cash flows for lease obligations | SFr 4,636 |
Escrow deposits | 600 | SFr 600
Less than one year |  |
Contractual undiscounted cash flows for lease liabilities: |  |
Contractual undiscounted cash flows for lease obligations | 1,039 |
1-3 years |  |
Contractual undiscounted cash flows for lease liabilities: |  |
Contractual undiscounted cash flows for lease obligations | 2,071 |
3-5 years |  |
Contractual undiscounted cash flows for lease liabilities: |  |
Contractual undiscounted cash flows for lease obligations | SFr 1,526 |

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- References No definition available. + Details
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- Definition The amount of deposits held in escrow. + References No definition available. + Details
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- Definition The amount of contractual undiscounted cash flows in relation to lease liabilities before deducting finance charges. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2025-01-01 -Paragraph 58 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_58&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph B11D -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11D_a&doctype=Appendix&subtype=B -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 119 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_119&doctype=Standard -URIDate 2025-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 119 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_119&doctype=Standard -URIDate 2025-03-27 + Details
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