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Cash and cash equivalents and financial assets, Cash and cash equivalents and short-term financial assets (Details) - CHF (SFr) SFr in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Cash and cash equivalents and financial assets |  |
Short-term financial assets due in one year or less | SFr 91,000 | SFr 116,000

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- References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of short-term deposits held by the entity that are not classified as cash equivalents. [Refer: Cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant