XML 108 R51.htm IDEA: XBRL DOCUMENT v3.22.4
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