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Basis of preparation - Going concern (Details) - CHF (SFr) SFr in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Going concern [Abstract]
Company's cash position	SFr 31,586	SFr 82,216	SFr 160,893	SFr 193,587
Short-term financial assets	SFr 91,000	SFr 116,000

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- References

No definition available.

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- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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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]

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